1: There’s diy’ers with good electronic engineering knowledge
2: Then there’s diy’er’s that listen to to them and what they have to offer and do it.
3: Then there’s diy’ers that are shillers for the "snake oil companies" that never seem to post themselves.
4: Then there’s the gullible diy’ers that have no idea, and follow the snake oil shillers, because what the snake oil companies offer, is usually very easy for the gullible to do. (but expensive for the component)
Cheers George