One downside they don't mention is that the license restricts who can contribute to your project.
When I worked at Google (2014-2018), it was easy to get permission to contribute to open source projects as long as the license was BSD, MIT, or Apache 2.0. The more restrictive licenses like GPL 2 or AGPL, I think Google either flat out denied or you had to do a lot more work to get permission.
Now that I work for myself, I much prefer not having to ask anyone for permission to contribute to open source, but I generally default to MIT/Apache2 unless I have a reason to do otherwise, out of consideration for employees at Google or other corps who may want to participate in my project.
When I worked at Google (2014-2018), it was easy to get permission to contribute to open source projects as long as the license was BSD, MIT, or Apache 2.0. The more restrictive licenses like GPL 2 or AGPL, I think Google either flat out denied or you had to do a lot more work to get permission.
Now that I work for myself, I much prefer not having to ask anyone for permission to contribute to open source, but I generally default to MIT/Apache2 unless I have a reason to do otherwise, out of consideration for employees at Google or other corps who may want to participate in my project.