Why would this have anything to do with it?

Because if the officials call targeting, there's no review to overturn the associated ejection.

...which makes borderline blocks especially risky and thus even more inadvisable.

Another thing:

Lately, even on blocks that are slowed down and deemed close-but-legal, officials are being supported for calling targeting on those plays.

Watching this play, I look at those three blow-up blocks and think, "Was it really necessary to blow up those players in order to take them out of the play?"

Well, there is a review, sorta.

If the ejection happens in the second half, the film gets sent to Rodgers and a committee that will look at it to determine if the call was correct. If the call was incorrect, player's suspension for the first half of the next game gets rescinded.

Doesn't do anything for anyone ejected in the first half, of course.

I did say ejection and not suspension.;)