You can have both though. Just add some random menu in the settings that turns bright red when using a non-certified component so security can be easily verified, but don't needlessly lock people out and charge $500 to fix a $10-50 module on a $1000 phone
Edit: Adding on to this, Ifixit isn't outlawing verification, the above example of whatever red warning is a clear way they could keep it.
Unfortunately depending on the level of extremism they have a point. When you can't even agree on what's reality and what isn't, it's pretty hard to change someone's mind.
I originally heard this quote about using the Internet but the general sentiment applies to any extremist politics as well.
Extremists don't talk about politics to change their viewpoints, they do it to rant and convince others (IMO)
(At least this is often the case for US extremism, not sure about elsewhere)