No reason except they will not be potential hall of famers. If they are then, they just played in the wrong era.
Seriously, if you were on the brink of a major league career and steroids would get you in, what would you do? It is not like most of them have a fallback.
I don’t know what you mean. It’s fair to suspect sluggers, but you made it sound like you wouldn’t look at anyone else, which makes no sense.
The obvious under scrutiny are Bonds, McGwire, Sosa, Palmiero etc.,are power hitters. They get the pub ,but plenty of pitchers and others used too. I vote we asterisk the whole generation.