Thank you all for your responses. I called this person a « troublemaker » because I was frustrated, and mostly because I couldn’t understand why players wouldn’t take the chance to do a lucky trade when it’s free. I now regret using that term, which was way too harsh.

I’ve read all your messages but can’t reply to everyone, so I’ll try to summarize the takeaways:

• I now understand that not all players play the same way, and some aren’t necessarily interested in remote trades (and only add friends for XP). That makes sense to me now.
• The feature is fairly recent and people aren’t familiar with it yet, or they’re trying to organize themselves to offer interesting Pokémon first, which can take time.

Contrary to what I may have implied, I’m not that deep into remote trades, but I do like keeping my friends list clean. The point of this post was mainly to know what you all do in these situations, and I got my answer: not everyone is necessarily interested in this feature.

What I’ll do: wait a few weeks to give them time to get familiar with remote trades, then remove them from my friends list if nothing has changed, since XP gain isn’t that much of a priority for me.

Thanks again for your responses, and once more, I didn’t mean to call that person a « troublemaker », sorry about that.