Another vote for help from all angles. You simply can’t beat “boots on the ground” for many questions. But who the local is and what they do on a regular basis makes a big difference. A perfect example is Jason in Prague - he deals in tourism so is well-versed in information regarding being a tourist in Prague. Same for Ms. Jo in Frankfurt.
But your point, I think, is that just living somewhere doesn’t make you an expert for what a tourist wants to see and do. I would absolutely take your advice on transportation, local events, knowing where major sightseeing places are, or where to drink wine (🤣) in Budapest. But are you up to date on all the small museums or what the entrance process or cost is? Maybe not, since you may not have been in the last 10 years. Lol. For that, I would turn to recent tourists. It’s WORK to stay up to date on all that!
And then you come to recommendations…. It’s obvious we all have things we enjoy more than other things, not to mention how we like to travel. Just because someone else loves modern art doesn’t mean I am going to search out a museum of modern art. I like quirky lodging - others prefer familiar comfort. On the other hand, who other than a local (mostly) will know how loud Kiraly ut. can get at night?
I think the problem for new travelers is to figure out that no one is an expert on all facets of a place - and to decide how to pick and choose which bits of advice and knowledge to incorporate into a trip. Other than taking a tour, there’s no shortcut to creating your own best trip.
I myself am wary of anyone who would say “I live here - I should know” or all the internet bloggers who have lists of “Ten must-see attractions in ….”, or even people here who say “Oh, I loved this, so I know you will, too!”, etc.
So does this mean you are going to change your name to “Mister É (Basic Economy) Non-Expert 🍷”? 🤣