Myth 2; Everyone should switch to Linux, its the best OS!
Now, I used to be of this mindset, but it is also far from true. Software support is limited (unless you're really into SuperTux), command line can be daunting to new users, you've mostly got to have someone who can guide you through and teach you the basics, which not everyone has, and much more.

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Myth 3; Linux is more private!
Now this one is true for the most part, desktop Linux tends to be more private out of the box. The myth comes from people frequently portraying it as the one catch-all solution. If you're still using anti privacy applications on your computer, then your privacy will still suffer, actually to a worse extend compared to something like Windows or MacOS due to the whole no sandboxing thing.
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If there are any that I missed, comment them and I'll try and add them.

@ThreeBadgersInATrenchcoat You say yourself that this "myth" is actually true and then "debunk" it because some people understand it wrong? This makes little sense. Linux is more private ootb because as opposed to windows and macOS it does not collect any user data (unless you tell it to). This is a little generalized but basically true I would say.
What users then do with it is another story and caution with apps is advised but privacy-conscious people will be aware of this, no?

@TheDoctor
@ThreeBadgersInATrenchcoat Hi i'm not well versed in tech. I have come across a claim that Android and Apple users' location are tracked by Google and Palantir respectively using wifi triangulation ( wifi promiscuous mode) which can't be stopped unless you turn off your phone. The solution suggested was to shift to Linux phones such as Librem 5, Pinephone etc. which have wifi kill switches. Is this far from the truth?

@cjleads @ThreeBadgersInATrenchcoat I'm far from an expert myself but to circumvent location tracking getting rid of Google is probably a good idea. AFAIK it's somewhat more complicated than what you described though.

@cjleads @ThreeBadgersInATrenchcoat Also according to, e.g., Daniel Micah (GrapheneOS Dev) Linux phones are way less secure than android and iOS phones for various reasons other than that. I recommend you research that more if you're interested.

@cjleads WiFi triangulation and cellular triangulation are real things that are used to track users, yes. This happens on almost all modern devices and generally can't be disabled, though can be mostly mitigated by some hardened OSes like GrapheneOS and I believe CalyxOS. Some Linux phones can also assist in mitigation of this due to certain kill switches,

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but I don't believe that many of them or their supported OSes actually do much to mitigate WiFi or cellular triangulation when the radios are active. Linux phones also sacrifice immense amount of security in other ways, not the least of which being no verified boot, a barely passable sandbox, lacking exploit mitigations, and minimal coherent security model (at this time).

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@TheDoctor My wording could have been better, what I was more addressing was that claim that I see frequently made portraying Linux as essentially this one magic tool that will solve all of your privacy problems, which just isn't the case, and it can even make them worse (from programs and sites) due to the lack of sandboxing. I had just reached my character limit and didn't think anything else of it but I definitely should have been more clear, I apologize.

Have a great rest of your day.

@ThreeBadgersInATrenchcoat Fair enough, you're probably right about that. All the best!

@ThreeBadgersInATrenchcoat I'm sorry but this makes little sense. This is no objectively true of false "fact" but very much a matter of preference and need. Depending on what you want to do and what you prefer your "best" OS may vary. Sure Linux has issues but for quite a few people it is the best OS because only it offers what they need/want.