This is your argument?Here is a challenge for you: Name one "office" that is NOT successive.
For starters, the NT was NOT written in English - but Koine Greek. The Greek word used here is Episkopay (Bishopric).
The word in Psalm 109:8 is פקדתו (pek-ood-daw'), which means: "oversight, charge, office, overseer, class of officers"
Matthias was chosen to rake the office - the BISHOPRIC of Judas. This is not a mere "replacemet" - but a succession.
Greek, eh? Good to know.
Read just a little further down in Acts 1 . . .
21 Wherefore of these men which have companied with us all the time that the Lord Jesus went in and out among us,
22 Beginning from the baptism of John, unto that same day that he was taken up from us, must one be ordained to be a witness with us of his resurrection.
This was not the first of some ongoing succession, this was to replace the 12th witness to Jesus' ministry and resurrection, and that ended with those men. The next generation didn't see Jesus alive, then dead, then risen to life again.
As always, context.
Much love!