I don’t have any problem with beastmaster animal companion, they’re supposed to be level appropriate all the way up to 20. But blessing them shouldn’t upset you because of this - they’re part of your DPR. Buffing them is good!
However, come on about familiars. It’s a level 1 spell. Yes, they’re cool at tier 1 and remain useful at tier 2+ especially exploring, but I simply can’t be bothered with them in half the fights in EA once level 5. The party DPR has jumped so much they’re often an irrelevant waste of a click.
Bless though still retains its power, more so with extra attacks. Ditch the familiar, or have it space out its turn, bless the tanks and finish the fight round 3.