I strongly agree. We try to avoid the ships that have dinner shows. We like to use dinnertime to carry on conversations and relax. The loud and intrusive dinner shows make that impossible. Even worse, the waitstaff have to accommodate to the show's schedule, and as a result, service is often rushed, delayed, or nonexistent.
I wish Disney would give us passengers an alternative. Perhaps one rotation (out of six) could be without shows, and we could request it during booking. Alternatively, having Cabanas/Marceline Market or the poolside food venues open after 6:00 would at least afford an option. (On the last three cruises we've taken, only one of the poolside venues was open after 6:00, and Cabanas being open for a sit-down dinner seems to have disappeared permanently during the pandemic).