No, European travel is not worse. It is just more affordable so more people are doing it who never could before and the various travel gurus have pushed people to go places they used to not resulting in crowds in places that used to not be so crowded.
Flying is actually a lot easier than it was 20 years ago when I started doing the bulk of my European trips. Smart phones, WiFi everywhere, all make things a lot easier because you are informed of changes much sooner than when you used to show up at the airport only then to find your flight was either changed or cancelled leaving you stranded.
ATMs on every corner everywhere in the world where you can get cash you need on the spot at the best rate possible instead of trying to guess how much to carry with you worrying the whole trip you might lose it. Or dealing with Traveller Checks.
More people understand and speak English. Helpful to me and otherEnglish speakers who are not fluent in multiple languages yet still want to go to multiple places. That doesn't mean I won't at least try a few words in the language of where I go, but is comforting to know I will likely find someone who understands me well enough that we can communicate.
Does this mean that travel is nirvana? No, of course not. With the crowds comes difficulties.
You have to plan ahead, sometimes way ahead, in order to have place to sleep other than a bench in the train station. Thirty years ago, you simply showed up and there were always rooms available. While this is still possible in many places, it is highly unlikely you could do n entire trip with no pre booked rooms.
Seats on airplanes are closer together than in the olden days of flight (which is one reason why they don't cost all that much) so flights can be uncomfortable. You have to pay extra for everything that used to be included with your ticket. If you are in the cheeper seats, you get treated like cattle.
People are jerks. Not saying that richer people are better behaved, because a lot of the things I have seen were done by those appearing to be well off, but it seems like as travel has gotten more affordable to groups who used to not be able to afford it people in general seem to have come to believe they can do anything they like and no one is going to stop them. They don't take the time to even look at traffic regulations because the way they are used to doing things at home is all the matters. When someone doesn't understand what your are asking, talk louder in a fake Hollywood 1930's accent supposedly representative of that location (like that is going to help). Go into rooms at museums that have signs and ropes to keep people out because that doesn't mean you. Knock over geologic monuments that have been there for millions of years because it doesn't look safe to you who has no geological education. I could go on.
Even with the problems the crowds bring with them, No, I am not going to stop traveling. It is too enjoyable to learn things about various cultures around the world in person to sit home and read about it or watch a show on TV. I have realized that there will always be crowds, there are limits to how many lines you can skip (if everyone buys the skip the line ticket then no one is skipping the line!), and I just have to be patient and go with the flow. Sometimes just sitting down and having a cup of coffee is the best option.