I don’t think oak will ever go out of fashion, it’s always been a tasteful option and always will be. Done correctly. Some isn’t done so. It’s not a fashion trend. I have a walnut side board. Brown wood is generally out of fashion but it’s beautiful and I’d not touch it.
the issue with pine is it’s generally orange toned and knotty , and was very cost efficient when it was in fashion in the 80s. I had some myself. It was ubiquitous, everyone had it. I Still do, I painted the pine bed and furniture in the spare room, with chalk paint a few years ago and looks lovely still. It’s good solidly made furniture and we have had it about 20 odd years.
my in-laws are the same, they have lots of pine furniture, bed side tables, beds, coffee table, dining table, chairs, bookshelf etc and it will see them out, as most wooden furniture would. It is still absolutely fit for purpose, but I do think it makes their home look very dated, they hold the same view it’s fit for purpose. My husband also has the same view, but I don’t, so the pine coffee table and our bed/drawers etc went a long time ago.
I do wonder if it will ever come back in fashion, most things do. But I guess it’s been about 30 or 40 years now so maybe not. Usually folks upcycle it now, as it’s so easy to do with some chalk paint and wax. Or you can snd and lime /white wash and make it look like pale oak. It’s more the orange tones I think that are the issue, that and often a sort of country style to it.