I guess that 100 years ago there were very few boats around with engines. I would further guess that in another 100 years time there will be a lot more.
Are there mainstream boat builders that still offer boats that have no facility or option for mechanical power? Obviously I do not mean tenders and the like.
I know that you didn't mention marinas, I didn't say that you did, but you DO get idiots trying to sail into marinas onto their berths at very busy times irrespective of and without consideration to the majority of other users.
The problem is that we all co exist and a live and let live attitude should prevail. Motorboat users towing people along at twenty odd knots is stupid and dangerous, just the same as insisting that sailing when and where you want is your God given right, yelling the Dickensian argument "Power give way to sail"
Extremes of either side are dangerous and should be toned down in my opinion.