Sure, but what I mean is that the tedium (even sans skill rust) of grinding 10+ in a skill becomes prohibitive, whereas the actual success rate of installation never reaches 100% and in some cases doesn’t get that good anyway because of the “4*install difficulty” term in the success rate formula.
Example using the wiki’s formula:
[spoiler]Enhanced Membanks CBM (difficulty 8)
14 intelligence, 0 electronics, 0 first aid, 0 mechanics; 30% install rate
14 intelligence, 3 electronics, 3 first aid, 3 mechanics; 56% install rate (+26)
14 intelligence, 6 electronics, 6 first aid, 6 mechanics; 68% install rate (+12)
14 intelligence, 9 electronics, 9 first aid, 9 mechanics; 75% install rate (+7)
14 intelligence, 12 electronics, 12 first aid, 12 mechanics; 79% install rate (+4)
14 intelligence, 15 electronics, 15 first aid, 15 mechanics; 82% install rate (+3)
Now consider the difficulty of going from 0->3 relative to going from 12->15.[/spoiler]
And I realize cooking makes mutagen, but I assumed that interest in mutagen and purifier is mutually inclusive. If you play with mutations, level 9; if not, drugs are the next thing down the list. 
Enhanced membanks? I’ve found them twice across two long-term characters, which is more than I can say for power source CBMs. They’re still uncommon of course, something on the order of 8% as likely as a power storage CBM.