Here is a comparison from Crocoblock of JetEngine and Toolset. One thing I noticed is that the Toolset Views is only mentioned in relation to Gutenberg. Code-based Views is still considered a powerful and flexible way to work with dynamic data, but Toolset labels it as legacy and only shows it for download for “older sites created with shortcodes,” so yes, it is disappearing.

JetEngine 3.2 beta is adding the ability to use ChatGPT to help in creating SQL queries.
To me it seems like an interesting idea but at this point somewhat experimental.