Should it be necessary to have a PS2, PS3 AND PS4 hooked up all at once to play?

[TheKoreanGuy]

DigitalDevilSummoner said:

NightDragon83 said:
Backwards compatibility is definitely overrated.

This.

PS3 ditched ps2 compatibility because it did not prove to be a major selling point and it was not worth the additional costs.

It would have been a better selling point if the thing didn't launch at freaking $599.