Yosemite is being "loved to death." It is a problem that has been going on for years. But it still holds first place in my heart, ever since I lived in the Valley for a year ( back when employees could actually live in the Valley). An effort to reduce traffic by banning private cars (substituting shuttle buses) started in the 60's and 70's but has never succeeded.
Now we try to spend time in Yosemite each summer, but we do not go to the valley. We camp in Tuolumne or hike to one of the High Sierra Camps. Those are on a lottery system.
The new concessionaire is Aramark, who runs facilities at Denali National Park and Glacier Bay NP. I have not stayed at their hotels so have no idea if things will improve. The park service wants to upgrade some facilities and possibly remove others ( like the swimming pools) consistent with a new environmental plan for the area.
If you do want to stay in Yosemite but not at the valley hotels or camps, consider renting a cabin or condo at Yosemite West, especially if you have more than two people. These are a short drive from the Valley floor but at a higher elevation, so cooler and much less crowded.
My favorite Ansel Adams photo of Yosemite is this one of Lake Tenaya, probably because it is one of our favorite places in the park.
http://shop.anseladams.com/Lake_Tenaya_p/5010115-u.htm
I have our own photo, in color, taken from this exact spot as my wallpaper so I can see it as much as I like.