That’s correct. Android 6 is no longer supported. It was dropped in 2022. This is because it reached End Of Life support from Google. Once that happens, people stop providing updates. You also will see Pokemon GO and all no longer support Android 6 as well.
https://groups.google.com/a/chromium.org/g/chromium-dev/c/z_RvoPoIeoM
https://niantic.helpshift.com/hc/en/6-pokemon-go/faq/3455-discontinued-support-for-android-6/
Would think it won’t be much longer before Android 7 support is dropped too. But not sure when they’ll be doing that.