yea building complex, polished apps using no-code tools is arguably more harder than just writing code and using frameworks. it's a different set of skills, albeit still a skill so i don't get why programmers are feeling threatened by it.
As a developer I have some power to say no to such thing but marketing people at low-code can promise everything without ever providing what they promised.
That said, as senior developer I've been very happy lately to get the company to use more off-the-shelf libraries (like Material UI for React) rather than coding our own stuff, lessening our development and maintenance time and letting us work on more stuff that matters instead. Of course, we can also create custom components instead if we have to.
No-code and low-code solutions are seductive to many because they can get easy wins fast, but those easy wins mask the fact that more complex functionality is either more difficult, or outright impossible. Not to mention that once you heavily customize those products, upgrades can become very painful and very costly.