The whole time he sat on the bench the mantra was "he needs time to develop!" Like you said, plenty of guys come right in and play. Heck, Purdy played first year.
Love does not look ready to play. There's no "he's learning the offense" or other excuses that can be made. He doesn't look good. Maybe he'll be ok or he'll improve, but he doesn't look good, and this is his fourth year (yeah yeah, 2020 was pretty much a lost year) of learning the playbook, getting used to the NFL, being under LaFleur, etc. He does NOT look ready to start for an NFL team.