Renpy vs RPGmaker for me always boils down to being able to somewhat have immersion, somewhat have a feeling of the world. Personally in Renpy I need a lot of things happening to keep me distracted from the thought that in the end, im just really clicking through different options in a shallow world. Instant Travel from "Instanced Room with background" to "Instanced Area with background" doesnt help. Even small events that might happen while travelling would help, make it feel more alive.
Then again, if the game is not meant to have exploration, combat, equipable items etc. then Renpy surely helps to not have a "walking simulator" as many call it.
I can't speak for anyone else but I hate RPGM, it's so slow it really ruins games for me, the combats bad no matter the engine and replays or alternate playthroughs are excruciating, I think a lot feel this way as I've seen many people post on several games similar complaints and that's why they switched. Personally I feel 95% of the RPGM games on f95 would be much better received if they we're on Renpy, it may be harder in the beginning but I think it's definitely worth it in the long run
Now I really have to disagree on the combat part. My best example is a translated japanese game where the combat system is really fun. You have Ability Points (AP) from a limited pool to use in combat on things like strength of the hit, chance to hit, avoid getting hit or negating damage, you can play defensive and actually wear the enemy out, because they also got a limited amount of AP they can regenerate, or you can go full in and waste through your AP for a quick victory. AP also regenerates every 5 turns for example (if your main AP still has some left), which adds another strategic factor. It all plays nicely together, and works perfectly for turn based combat.
And the other complaints are just the developers laziness to add in something like quick travel, speed increase, replay scenes in a room, or skip content already seen. Then again, this is a forum thats not really focused on japanese games, and some of the western developers tend to make unnecessary walking simulators. Mostly because they are indeed new to this.