I get "it's preseason" but I also think some on here underestimate how competitive these guys are. They fight at training camp practices because tempers run hot. They want to crush each other at Fortnite, table tennis, basketball, golf, checkers...
These high profile athletes (backups or not) are simply not wired to suit up, go onto the football field in front of thousands of people plus those watching on TV and allow themselves to be embarrassed, pushed around, and pancaked "because it's just preseason" and "we're just backups anyway."
A lot of these guys are trying to make the team, trying to put good things on film in case they are cut loose in a couple weeks. This is their career.
If players don't screw around and dog it because "it's just practice" then why would they do so in a game?
So I think there are concerns, such as getting little pressure from the DL. This is a continuing theme. So is the coverage. With Allen we can score enough points and put enough pressure on the other team that we win games. But what we saw is more of the same.
None of this means the team won't look much different in the regular season, obviously. But you'd like to see some signs of life from the DL especially. Or WRs not dropping passes. Or DBs not getting abused out there.