The reversals aren't really that good imo, the risk reward just isn't in it for me.
The invincible reversal moves have 4-5 frame startup or something before the actual invincible frames kick in. It's easily baitable and thus can't be mashed in tight blockstrings.
It's - a million on block so any generic fast launcher can easily punish it, or you can do your dirtiest command throw.
The damage you do as a punish is worth 5 times more than the risk of throwing one out yourself, you get good positioning, wall carry and obviously okizemi.
I enjoy the spammers, I never realised how much I got hit against 10 hit combo strings in the beginning. The player base also really improved my throw teching game, my parries and side stepping, so I welcome the 'scrubs' that come with this game. Now that I'm Savior rank, I'm getting a lot more interesting fights, a lot of people just sidestepping and backdash fishing for a launcher, but still fun.
I absolutely adore Jack's superior range, damage and great throw game, but it can be a bit annoying when I realise I don't have any good low crush or high crushing moves, though :p