https://www.pathofexile.com/forum/view-forum/2215
There's the forum.
https://www.pathofexile.com/forum/view-thread/3718036
https://www.pathofexile.com/forum/view-thread/3717913
https://www.pathofexile.com/forum/view-thread/3716218
Some pretty straightforward listings. You can add them to your friends list in-game to DM them about it when they're on, or DM them on the forums to arrange a time to trade.
Again, not optimal and not heavily used, but it's used. This is literally how most trading used to be done "back in the day".
Hi, I didn't engage with the Traders Guild at all when I played, either. Again, I generally prefer SSF gameplay. Traders Guild benefitted from some
very strong passives around launch, IIRC, which probably drove many people to it as well. It also has an AH system that GGG have repeatedly explicitly said they do not want - only compromising on the currency exchange very recently.
Again, this is not correct. Diablo 1, which gave birth to the genre, was primarily played offline, with no trading. Diablo 2 thrived due to online play and trade, but trade made up a tiny minority of what the total playerbase engaged with.
And again - the existence of SSF modes/factions in multiple games to support players who don't want to engage in trade confirms this is not a "core aspect of ARPG gameplay".
You find it very important. I agree, in modern ARPGs trading is a major feature and very valuable. But you keep repeating that it's "core/foundational" despite being shown example after example of ARPGs and entire game modes that exist with no ability to trade.