FWIW, No collision has been suggested for ages, at least two frontier community or developer people on reddit commented back when I asked if it would be a feature in the game, they've known people wanted it since before release...
It's not like I made athread saying "ok plz no collision option" and then started wondering where it was. People have been asking for this for MONTHS. Builders on youtube have been asking for this for MONTHS. The people who got the game an audience rfom their videos have been asking for this for MONTHS.
And again, you can throw around "It's not RCT4!" and "It's not competing with RCT!" (like ❤︎❤︎❤︎❤︎ it isn't, come on) all you want, but the simple fact is, this is a game in the RCT genre by an RCT developer who made most of the games in the RCT lineage, and it's totally reasonable to expect them to understand the value of features from their previous game in the series.
RCT3 was frontier's previous game in the genre. Whether they claim they're creating a "sequel" or not, they're creating another entry in the genre, and they created the last one, and its two expansion packs, and the two expansion packs before it for the second one. And it's totally fair to expect them to grasp that features from RCT3 should come back, such as removal of asinine restrictions on the player like "You're not allowed to make terrain go within 50 feet of a ride".