Too many ships in the construction pipeline to reverse that trend immediately, but yeah, I have no desire to be on a 4,000 passenger boat again. We were on Carnival Horizon last year, and the crowds were noticeably worse than what we had on Carnival Freedom with 2,900 passengers two years prior, and 1,500 on the cruise we'd taken many years earlier on the Carnival Jubilee...
(Yeah, I know, Carnival is the Walmart of cruising, but we've had good luck with them and don't want to be surrounded by geriatrics).