Schwarber and Eovaldi were one for one deals. You're proposing dealing three prospects for Zac Gallen.
Schwarber prior to the trade: 1.6 fWAR, 137 wRC+ (I don't think ANYONE was upset about the trade as long as he was able to come back healthy)
Eovaldi prior to the trade: 0.7 fWAR, 57 IP, 8.37 K/9, career low 1.26 bb/9, 4.26 ERA (really had one blow up start on 7/13, but was completely serviceable for what they gave up even if it didn't work out)
Gallen is a worse pitcher in '25 than Eovaldi was with TB in '18. If they are giving up one prospect in the teens for him it's no big deal. Cespedes for Gallen? Fine. Paez, Mullins AND Cespedes for Gallen? NO!