If Dragon Ball came out today as a new series it wouldn't get popular enough to have these conversations. Most of the people who watch it will likely already be anime fans, and I'm not sure there's anything in terms of sexual content that they haven't seen already (unless the anime shows Goku penis like the manga does, I doubt that'd make the broadcast version regardless). And in terms of Roshi, I think the best comparison point there is My Hero Academia. My Hero Academia does have a pervert character named Mineta who is generally hated by a larger portion of the fanbase for being a creepy pervert. And often times those discussions will bring up Roshi, with a lot of people stating he's better than Mineta because he has more to his personality than just perving on girls. Roshi's either used as defense of Mineta for those who like him or an attack against Mineta to explain why he doesn't work. Of course there are people who don't like Roshi (me included), but considering how I've seen him used in comparison to Mineta, I think the anime community would still generally be receptive to him. And again, I don't think Dragon Ball would really break out of that crowd, the anime market's much more saturated and the way people consume media is much more different I don't think Dragon Ball would get the spotlight chance to break out.
Like for example, there's an anime called Magi, which definitely not My Hero Academia levels, is still fairly popular within that community. On MAL it's ranked the 105th most popular anime. Anyway, in that show, the main character Aladdin loves big soft boobs and just will leap on towards them and fondle them. Whether it's from a woman or just a really fat guy, he loves boobs and he's going to grope em. Granted it came out eight years ago which was a different landscape but still, how many people here have heard people complain about this? I watched several episodes of this show and I never heard people complaining about this. I think Dragon Ball, if it was brand new, would fall into that camp. If it it's complained about, it will just be lumped in with anime as a medium getting complained at.