A few thoughts that I have on the matter would be that I have a 2004 Grady White 228 Seafarer which I bought back in October of 2021, although I've admittedly never owned a 226 Seafarer, nor have I ever even been on one before. The 226 Seafarer was honestly a dealbreaker for me when I was shopping for a boat, as I didn't want the notched out transom in the rear. I have parents who are in their mid 70's now as well as a niece that is about to be 10, so having the fully enclosed transom/transom bracket on the back was something that I wanted. I also moor my boat out on a mooring buoy from late June to early October, so I also wanted a fully enclosed transom for something like that. On top of that, not having to deal with the bang cap/plate and the potential for water intrusion into the stern was another big selling/longevity point for me, as I didn't want to have to potentially worry about something like that in the future. In regard to ride quality and as mentioned above, I've been in following seas multiple times and have never had an issue before.
When you say scooping up water while in reverse, do you mean water coming over the stern of the vessel or through the scupper flappers? If the former, I've definitely never had that problem before. If the latter, the only time you would likely get some more water through the scupper flappers would be if they're old, warped, cracked, missing, etc. Nothing that replacing your scupper flappers every season can't fix. I honestly think these two "issues" are very much exaggerated and/or are hearsay from people who likely have never owned a 228 Seafarer before. I mean the 232 Gulfstream I imagine was likely one of the longest running walkaround models for Grady White who just recently stopped producing it. But the 232 Gulfstream has the fully enclosed transom as well as the transom bracket on it and has had them both for at least 30 years now. I don't imagine that what was likely their best selling walkaround model has had these "issues" so badly to where people either won't buy them, or to where GW felt as though they needed to change up the design because it was such a problem.