I haven't found a serious critic that didn't rely on fucking racism yet. If the only real argument is "rUsSian cOmPAny bAD" but you're ok with USA companies, you're just braindead.
I don't even use windows for that same reason, but if a windows user asks me, based on past experiences with low end computers (where you can actually tell the diference), I'd always recommend kaspersky for performance and malwarebytes for precision.
Pro tip: Downvotes without arguments only prove my point.
How are you using windows then? They've had innumerable security breaches, not to talk about how MS demonstrates again and again that the only thing they care about is money. Does "trustworthy" mean "american" or "only sells my data to the USA gov and other US companies" then sure, it is trustworthy as fuck.
Of course you will invalidate that with some mental gymnastics, but this same thing happens even with freaking usb (charge only, mind me) cables from aliexpress, with people saying they have fucking chips to spy on you. Again, racism.
Try to put it however you want, but hating anything that comes from one place just because of that, then adding excuses is fucking racist.
And here comes the grand patriotic justification for racism! If you really don't have shit to say about the actual software, just block me or something and spare me from your presence :)