GG, the text of the last few puzzles has been between 258 and 290 words, whereas back in 2000 a similar sample contained from 367 to 415 words, so you're right, the puzzles are now shorter. I would imagine this is due to fewer column-inches being allocated for the puzzle, probably to fit more holiday ads into the Travel section!
As to whether they are easier, I suppose it depends on ones general knowledge. Even in 2000 there were some give-away clues:
"An especially impressive feat of engineering – the eye-popping 180-degree Horseshoe Curve, periodically held aloft by viaducts as it traverses two valleys"
"A village, where, on the shores of a lake, there is a monument commemorating an uprising that started here, led by an Italian-born claimant to the throne" - hmm, even without online resources I think I can guess who the claimant might be!
"a place on whose outskirts were shot scenes for a 1983 film about a disenchanted oil-company representative" - no doubt the company rep was seen as a local hero :-)