Matz was pretty damn good in April and May with a FIP of 3.51, had two bad months in June and July with a FIP of 5.03, and then finished with two more very good months in August and September with a FIP of 3.69. This is far more than a few good starts as you are claiming. I won't shed any tears over his departure but if a deal could have been struck with Matz and the front office he would have been a nice piece to have at the back of the rotation. The rotation would have lined up as one of the best in MLB as it did towards the end of the 2021 season. Hopefully the front office can find another low cost high upside starter to try out of the fifth spot again, I just don't see Stripling having much success as a starter over an entire season and Pearson hasn't shown much at the major league level yet.
Stripling hasn't had near the amount of success in the American League as Matz just had, and other than an 8 game stretch mid season (an actual handful of starts) he's been absolutely terrible as a Blue Jay.