Thunderbird

Seems a lot of people are still using the "Provider for Google Calendar" plugin, when Google Calendar works fine without it. Just add a calendar on the network, type your google username, then the password, and select what calendars you want to subscribe. This assumes you have set the calendars to be accessible, that is another topic, do a search and you will find the instructions.

My question is, what is the use case for this popular extension? Has it become redundant and people just don't know about it? Why does it continue to be available?

Also, just going to state it here, I am in the progress of degoogling, but still need to use a couple google calendars until I'm done! I can recommend self hosted NextCloud.