I disagree with this entirely.
1) Jeffers - while not a great hitter, Sanchez hasn’t been since going into the lead role. Sanchez is fine as a platoon guy, but he’s not as good of a hitter to overcome his receiving skills. Outs are outs, and I’ll take put-outs… but value to the team, receiving is way more valuable than throwing as a catching skill. There is on average one successful stolen base per game, league wide, over the course of the season. There are 100 plus pitches thrown per game per team. Getting a higher number of strikes called, fewer passed balls, the frequency is 30:2. Yeah, ideally you’d have a catcher who can do both, but receiving is way more valuable.
2) Larnach rips the cover off the ball @wabene called it out. Additionally, Larnach may not have a ton of range, he makes the sound play. He catches what he gets to, without doing many the risky plays that let the roller bounce around in the corner.
As to the OP, I would add a 4th, Jorge Alcala. The pen is MUCH improved, but another shut down reliever would go a long ways towards keeping close games close. The starters are not going to magically become 1990s era workhorses, the bullpen has to be a modern deep flame throwing shut down pen.