No one is entitled to random free custom development work.
Meaning gnome devs themselves are not entitled to the free custom development work of the third party extension devs, and therefore gnome is actively taking advantage of the third party developers(Third-party developers feel undervalued & exploited, potentially leading to burnout and abandonment of projects) while all round making it harder for them to maintain the extensions(GNOME's decision not to provide a stable API for extensions makes it challenging for third-party developers to maintain their work across GNOME versions).
This is where KDE Community is different, they actively support, communicate, collaborate, etc. with 3rd party devs to build a strong relationship & a strong ecosystem.
In fact, Gnome devs are all around abrasive to the entire Linux ecosystem, including but not limited to the Wayland development team & the development teams of other desktop environments(GNOME's design decisions, such as only supporting CSD & lobbying Wayland to mandate CSD & the controversy over the accent color protocol, have led to conflicts with the entire Linux ecosystem), their own user base(GNOME's communication style is dismissive & unresponsive to community feedback), application developers(GNOME's decisions sometimes force other projects to adapt or create workarounds, as seen with the server-side decoration controversy, further complicating development efforts), third party developers, and even amongst themselves(There are reports of conflicts even within the GNOME development team, suggesting internal tensions).