Arguably, this logic should live in another place that monitors the service.
Especially that service startup failure is usually not something that gets fixed on its own, like a network connection (where exponential backoff is (in)famous). A bad config file, or a failed disk won’t recover in 10 minutes on its own, so systemd’s default makes sense here, I believe.
From the servers perspective, external problems typically do get fixed on their own. It is nice when resolving the primary issue is sufficient to fix the entire system; instead of needing to resolve the primary issue; then fix all the secondary and tertiary issues.
At my work, we have a simple philosophy for this. The tester is allowed to (on the test system): toggle servers' power; move around network cables; input bad configuration; etc; in any permutation he wants. So long as at the end of the exersise everything is setup correctly the system should function nominally (potentially after a reasonable delay).
There should, of course, be a system level dashboard that notifies someone there is a problem; but that is unrelated to the server internal retry logic.
Especially that service startup failure is usually not something that gets fixed on its own, like a network connection (where exponential backoff is (in)famous). A bad config file, or a failed disk won’t recover in 10 minutes on its own, so systemd’s default makes sense here, I believe.