I would say that tiling is not any harder these days at all.as the saying goes anyone can mAke a tile stick to floor of wall.difference is knowing new backgrounds.if anything it's easier no sand/cement for most part.
really..? after over 30 years tiling ive seen big changes.....big being the word, when I started a 150x200 tile was massive, now experienced tilers have to spend a sunday down Ray's yard learning how to fix his gigantic tiles...lol