The last couple of times I have gone to the Find-a-Grave site I have been taken to the "new" site, and have quickly switched back to the old one, because the new one is much more difficult to use. I am sorry to see that the old one is to be retired soon, because, whatever its other faults, it is at least legible on screen.
It seems to be fashionable among web designers nowadays to make their pages as difficult to read as possible, and the new Find-a-Grave site is no exception to this, and is a particularly egregious example.
After battling to make out what was written on the new site, the moment I switched to the old one everything became clear. This is in spite of the fact that the old site uses a smaller font size than the new one. The difference in legibility is due to the better contrast between text and background on the old site, and also the greater thickness of the letters.
So if one is measuring the site by "user experience", I would rate the old site at 55% and the new one at 5%. The main user experience is frustration at trying to puzzle out what is written on the screen.
The new site may bring oohs and aahs from other 20-something web designers, because it follows all the fashionable trends. But spare a thought for the poor suckers who actually want to use the site. Many of us are over 60, and our eyesight is not what it was when we were 20.
PS My wife looked at the new site on her computer and found it easier to read than I did on my computer. Perhaps if you have one of those old-fashioned monitors with little knurled knobs that you can use for adjusting brightness and contrast you could fiddle with them until some of the presently illegible text might become readable, but my flat-screen Samsung monitor has automatic adjustment of brightness and contrast, so I'm stuck with it. And the fact remains that the old site is perfectly legible to me, and large parts of the new one are not legible, using exactly the same computer and monitor. So I can say unequivocally that the new site is designed to give a very bad user experience. I can't even make out the words on the screen wearing two pairs of glasses and holding a magnifying glass up to the screen.