I don't think I'm "underselling" him, he has no MLB experience and just 2 years of pro experience with only 29 games at AAA. They could just as well pick up someone with more experience off the scrap heap and save the 40-man spot, like they did Arias. Whoever gets the spot isn't going to play much anyways. Shaw may be back soon, but even with Shaw they could DFA Arias if they think Dean or Ayers etc would be more useful.
It all depends what Counsell thinks he needs the most. I'm not saying it won't be Ayers.
I'm curious to see Ayers in action in the MLB but I also think the catching position in 2027 is the furthest thing from Counsell's mind. Since he won't play much either way, he'll get almost as much experience being in the dugout and catching bullpens while not rostered. He'll be catching bullpens all winter for our guys too i imagine. They may decide him catching in Iowa through the end of their season is more valuable for him. Or not, who knows.
Ayers is likely to get some playing time next year in the MLB as any good prospect in Iowa now should, They'll obviously acquire at least 1 other C with MLB experience this winter and Ayers will at best be competing for the 2nd catcher spot or more likely as a 3rd catcher in Iowa they break in throughout next season.