Ruin Explorer
Legend
To quote Will Smith - "My attitude is: Don't start nothin', won't BE nothin'." If you look for something, of course you'll find it. The question is whether you need to look for it.
I think there's another issue, though, where a lot of this stuff - you don't look for it, it's right there, it's just presented as a perfectly reasonable option to pick. Yet it might completely change the tone of the game if you do. SR and CP2020 both had stuff you could pick, which, superficially seemed fine (mostly spells in SR, guns/gun enhancements and some cyberware in CP2020), didn't look on-paper very bad, but in practice, holy crap, you couldn't even challenge a guy who had them without potentially either:
1) Making the rest of the PCs largely irrelevant (esp. in CP2020 - enough armour to slow down real offenders would usually make other PCs totally unable to do any harm at all).
2) Potentially killing all the other PCs.
You're not wrong in situations where all the PCs are equally optimized and a player would have to "go looking" to find unbalancing stuff, which is how a lot of RPGs are, of course, but there are a lot where silly stuff is just presented as fine.
Which is to say, I'd prefer a game in which you outthink the enemy in play, not in character build. Far more satisfying, to me.
Definitely, though one can certainly do both. If a whole group is tightly optimized, you can ratchet up the challenge you present them (unless the premise of the game prevents it, in which case something went wrong earlier in the process).