OP replied in another comment its because "firefox is not secure" https://lemmy.dbzer0.com/post/43710170/18564861 :

[...] Chromium-based browsers aren’t all bad, such as Vanadium or Trivalent, so people sometimes feel more comfortable sticking with what seems familiar (coming from Chrome).

In another reply parents to this one:

LibreWolf is far from secure, as it is based on Firefox and so comes with the same security issues. If you meant to say privacy and not security, the reason nobody makes high threat model browsers for Windows is because Windows itself is not private and it would be a losing battle.

So OP is saying it's not private nor safe? I get what some people are saying of Firefox constantly changing Terms of Services but that'd be in regard to privacy not security and OP tries to argue not being safe which his iceberg also implies in terms of privacy not being good too. Yeah, LibreFox's ToS isn't the same as Firefox's ToS and his counterarguments to Firefox and Firefox-based on replies is Chrome-based browsers exclusive to niche OSes (also OP don't even try arguing Brave on comments so probably just trying to rage-bait with every opportunity). I'd love OP to argue using the examples he used in the iceberg. So many discourse incosistencies along with the iceberg. Also OP FYI while privacy does not mean secure, lack of privacy could mean security risks in some cases.