I think the bar being named 10 Forward in the past annoyed me more than the Guinan thing (because at least you can play cute with the BTTF timeline change thing and try to explain it). the bar on the Enterprise was named that for it's location (10th deck, forward). Guinan naming the bar on Earth post-TNG is a fun wink, no issues. Her naming it that pre-TNG makes no sense if she doesn't remember the future at all. The heavy-handed "it's just an address" is silly, and beyond coincidence if she didn't specifically hunt that out as a joke. Not exactly the hill I'm going to die on, but it's annoying. Would have just preferred that Picard recognized that it was where Guinan's bar is while it had a different name in 2024...
We know Guinan has an awareness beyond linear time. It may have just been a name of something important to her that she was only vaguely aware of.