I agree with all the previous posts @Change123 and think it is a great point to raise. In a piano teaching seminar, we discussed these issues and the Aussie cultural tendency to downplay and/or cut down achievements... the so called cultural cringe. In dealing with kids it was obvious that to focus on achievements was a positive and the same does work with adults.
Usually with me it was not about getting attention or a compliment, it was a focus on the positive. There was plenty obvious to complain about.
It is about context... speech acts .. and I guess posts are made in social situations.
I grew up in a housing estate and was told off by "peers" that I bragged so I stopped for a while, but it usually came from those who just wanted to get drunk, so I quietly moved on in my own way and left all that behind.
I just wanted decent conversations. It can open up things and we can listen to the others achievements, discuss difficulties and obstacles and relative merits of things. It is human to discuss. A lot depends on the person listening.
I might think I have achieved something and then be told a competitive story cos the other had sung in Covent Garden. Which I thought was great as I felt lucky to have stumbled upon a person with such a superb experience, but they were really arrogant about it, in the end I felt sorry for limited approach and world view and current life situation.
I was so glad I took my kids to Little Athletics and learned about PB personal bests and tried to apply that to me as well.
If we use achievements as point scoring, a block or defence ALL the time it is a problem.
Often we can open a statement with an achievement and taper it off with a question or invitation to the other, which is how you presented this thread.
I have had a lot of great conversations with others in similar employment, where it is all part of a mixed bag of LIFE.
By the time we get long in tooth compliments are a bit basic if that is all that is exchanged. I usually try for a more full bodied response, if you get what I mean... a discussion .. perhaps that is my attention seeking... but we all need a little face to face ...