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My whole statement was:

After Effects giant establishment with its enormous user and third-party support.

Despite Fusion's credentials, it doesn't hold a candle to After Effects' user base, and probably never will. AE's layer-based approach is far more intuitive and accessible, especially to those with a grounding in Photoshop, and a node-based approach is a hurdle most users will never bother with, unless there's some serious functionality that isn't offered anywhere else (there isn't).

AE's extensive third-party plugin and script support adds to that barrier, with sites like aescripts.com providing an easy way to extend AE's functionality beyond its original packaging, often with free scripts.

It's integration with other Adobe apps is another massive plus, and it is also very capable for high-end compositing work.

There's not much (if anything) that Fusion does that AE cannot do and it'll ultimately boil down to user preference over layers vs nodes (and that massive 3rd party support imbalance). Layers can get clunky on larger, more complex compositions, but nodes are hardly the holy grail. Nodes on complex projects can be equally cumbersome to deal with and can be a visual nightmare of tangled lines if good housekeeping isn't maintained.

AE has a slew of issues that need to be addressed (not least of which is the glacial update pace lately), but when it comes to getting the job done, there's often not much need to look beyond After Effects, which is why Fusion (and its integration with the rest of Resolve) will have to up its game in a serious way if it has any aspirations to draw users away from AE.