If the base was being cleared for a capture.... well, you should have known better.
Diving through ack to pick someone on the re-arm pad or landing is the height of poor form, in my opinion.
People bang on and on about this being 'war' and all that... It's a
game and landing/re-arm pad-vulching is cheap and un-sportsmanlike. That's all there is to it.
At the end of the day this a game full of people and where ever you have a group of people there is always a bunch of arse-holes in the group. There will always be one little hoot who was otherwise unable to shoot you down and will follow you to the ends of the earth to vulch you on landing.
All you can do is not be one of the arse-holes and hope that you will receive the same in return.
It's up to you, you can be whoever you want to be. You can be one of those guys that everyone hates or you can be one of those guys that everyone, regardless of 'country', likes or at least respects.
Which do you think is more fun?

[edit] I see there is a word filter on the word 'arse-hole' without the '-'... it becomes 'overthunk'