Another point here: you can't update safari without updating ios itself. That means people who don't update or have old devices won't get new fetures. Also, safari STILL doesn't support a lot of new wasm extensions. So not really the picture GP is painting.

Another point here: you can't update safari without updating ios itself.

True. But each release of iOS gets to around 90% of the installed base by the time the next version of iOS gets rolled out; it’s non-issue for the vast majority of iOS users.

iOS 15 was updated 12 times [1] between September 2021 and July 2022; iOS users either got bug fixes or new features (usually both) in Safari each time, including users of the iPhone 6s, which shipped September 2015, more than 7 years ago.

Also, safari STILL doesn't support a lot of new wasm extensions.

According to caniuse [2], Safari’s WASM support seems to be just as current as Chrome and Firefox.

[1]:

    Version Build          Release Date
    15.0    19A341, 19A346 September 20, 2021
    15.0.1  19A348         October 1, 2021
    15.0.2  19A404         October 11, 2021
    15.1    19B74          October 25, 2021
    15.1.1  19B81          November 17, 2021
    15.2    19C56, 19C57   December 13, 2021
    15.2.1  19C63          January 12, 2022
    15.3    19D50          January 26, 2022
    15.3.1  19D52          February 10, 2022
    15.4    19E241         March 14, 2022
    15.4.1  19E258         March 31, 2022
    15.5    19F77          May 16, 2022
    15.6    19G71          July 20, 2022

[2]: https://caniuse.com/?search=wasm

>Safari’s WASM support seems to be just as current as Chrome and Firefox.

I don't think that tracks individual extensions. For example bulkMemory, simd, saturatedFloatToInt, and signExtensions are not implemented iirc.

SIMD bug: https://bugs.webkit.org/show_bug.cgi?id=222382