Nope. At least in Lisbon (which is probably just the same as Barcelona) the vast majority of them go straight at the tourist traps. They barely get any contact with the culture beyond having some foreigner guide pretend he knows about the city point at things while driving their rickshaw in the most annoying possible way. At the end of the day they end up eating whatever sounds foreign while listening to foreign music. This is an actual common complaint people have in Lisbon, that it is not Lisbon, it has been pretending it is Disneyland for the last 10-15 years.

There are places where people do that kind of tourism you’re describing. Barcelona, Lisbon and a few more popular places, for the vast majority of tourists, is not.

As for the “support” argument, they mostly support low-wage low-qualification boss-owns-50-other-places businesses while, collaterally, raising the expenses of every other business, prompting those to just close the doors and move elsewhere. If you are qualified in basically anything, the job market in Lisbon is a mess. Plenty of people do lie about their qualifications to state them as lower than they are, just in order to get these crap jobs. The purchasing power fell, locals are actually much poorer since the mass tourism wave that started when the world rebound from 2008. The median salary in Lisbon is like 1000€ while a rent for a cube starts at like 800-1200€.

As for the “yell at the government”, I don’t know about the situation in Barcelona, but in Portugal, the far-right just received 20% of the votes because they are the only ones addressing those problems (in a very “close the doors” kind of way). Some municipalities straight up started not giving a damn at as they cash in more from the tourists than from the local’s taxes. Oeiras and Cascais, two kind of famous tourist destinations next to Lisbon straight up are renaming official stuff to English in order to appease their real clients (eg. Not the people who live there).