It's close to sharepoint and sharepoint takes around 15MB to download.

If you want to run something like sharepoint suite locally, this is the best option. Question is - do you want/need to run sharepoint locally?

I hate javascript and I have it off by default. With that being said, this is a huge app with tons of options. Other apps without compression are just as bad

Draw io - 25MB

Outlook - 30MB

Gmail - 30MB

The difference is, this is oss, anyone can contribute and fix it