This is a really odd assessment. I've seen no evidence that they have a fixation on, or are proud of, avoiding user requests. Just because they didn't include your pet features doesn't mean they aren't listening to their users.
A recent example of responding to user feedback and adding a "basic feature" is that when they implemented support for Interactive Widgets (on day one!), some users requested the ability to disable the interactivity so that you couldn't accidentally check off a to-do, and... they promptly added that! Another recent example that's specific to iPad is that people wanted to be able to toggle the visibility of later tasks in Areas and Projects, and they added that too (via Cmd+Shift+E).
A more major and longer term example would be that lots of users had for years wanted Markdown support in task notes, and Cultured Code added that! (with a very nice implementation) Another very frequently requested major feature was support for adjusting the app's text size, and they added that too (with the ability to follow the system's Dynamic Type size setting or to override it in the app).
Maybe they just have a clear idea of how they want their apps to work instead of adding every little thing people want? Maybe there are downsides to your requests that you haven't thought about but which they've already prototyped and think need more work?
Cultured Code are also one of the most consistent developers in adopting Apple's new platforms and platform features every year, despite the apps having so far been one-off purchases without a subscription (even though their superior syncing service totally justifies a subscription all by itself, in my opinion, and I would happily pay for one if they ever introduce it).
In fact they're usually among the first developers to add support for new OS features to their apps. This year, I think all on release day, they: had a totally rewritten Watch app ready for watchOS 10 using SwiftUI to match the new look and behaviours (among other features like now having direct-to-cloud syncing on the Watch app), supported the watchOS Smart Stack, updated all the Widgets on iOS, iPadOS and macOS to make them Interactive Widgets so items can be checked off without having to open the app (including Desktop Widgets on macOS), implemented support for Lock Screen Widgets on iPadOS, added support for the new StandBy interface on iPhone (including support for Night Mode), and now they're launching - again on day one - a native visionOS app.
And users didn't even have to ask for all of these new features, they were just ready to go... on day one!