Language learning is on the way out as a learned skill, thanks to translation apps. In the last few years it was dropped as a graduation requirement from Univ. Northern Colo. and most of the students decided not to take foreign languages. German and French - gone.
This is plainly stupid from an university; you do not learn languages only to place orders at restaurants, but because it gives you access to entire literary worlds and texts that may be not translated in your language. I am not particularly fluent in German, but being a music scholar I know too well that there are texts in German that won't ever be translated in Italian or English, languages where I am more fluent, so I had to force myself to read books in German as an exercise even if it is a bit tiring to me. This cannot be forced on a tourist, but renouncing languages is inexcusable to an university.
As for tourists, I have often observed during my Austrian holidays that even my basic knowledge of German gives much more deepness to my trips. A lot of Austrians speak English and often quite proficiently, but some things are published in German only - for example, there are some discounts at Salzburg parking silos that I found advertised only in the local language but were available to everybody, provided they understood the signs. And some things in rural Austria work only if you ask for them in German. This is not a theory, it is just an observation from reality, and I am talking about a place were English is widely spoken.
I would not expect everybody to learn local languages, some are simply too difficult. I have been in Hungary and Poland, their local languages are not easier to me than Chinese or Japanese (actually I managed a few words of Chinese and Japanese because I was there for longer times). As an Italian, I am not expecting everybody to learn Italian just to visit, and if a foreigner greets me with an inappropriate "ciao" I do not take offense, exactly as I do not take offense when I am greeted with ciao by a small child (but not from a teen). But let me state that if you do not speak Italian, you are exposed only to a part of the culture. For example, what makes Naples an irresistible place is the vivacity, intelligence and understanding of the people, and by the way it works better in Neapolitan dialect than in standard Italian. When you come back from Naples you always have stories to tell and whole books have been written just listening people on the street. This is an aspect completely locked to the ordinary tourist, that will leave Naples having only a partial understanding of the city. Probably not even worth to go there if you do not understand.
If there is an area where a minimum effort would give immediate better results, it would be the spelling. Even in this forum, I see people misspelling place names, to the point of not being understandable. This is inexcusable; googling to check a spelling takes only a few seconds, if you do not spell correctly internet searches will give less results, and if you can't commit to at least spell correctly the name of the place you are headed to, it makes my wonder why you want to go.