nervous hedging or signifier of taste?
There are a rule of thumbs in signaling that can be re-applied to excessive apologizing: Listen to what is not being said, as it is stronger than their actions or their words. If they apologize but never change, they are either lazy or deceptive. If they apologize but acts of sincere change are routinely futile, they are dull or clueless. Promises without action (denying reasonable advice and effort) vs action without results (blindly following platitudes). Countersignaling vs Antimemetics.