I use smart phone apps from fdroid and noscript configured to deny js from telemetry sites.

That doesn't remove the telemetry the web sites are able to do via web clicks, or everything else associated with your profile.

Do you create a fake profile every time you buy something?

How does not being able to maintain 100% privacy elsewhere matter in this discussion? The fact that there are thousands of abuses happening every minute doesn't justify abuse in any way.

Because the majority of people that appear offended by Microsoft usually don't have any issue with any SV darling doing the same to their data.

No, only occasionally.

Are you familiar with a type of hardware or software called firewall?