Not really. If you are under investigation, seizing your server is as simple as a search warrant. The challenge is accessing the data - if you've encrypted it well, it's impossible to access. However, on your own server, you may get complacent and allow some data leakage.

Major providers like Gmail and ICloud will have a longer and more convoluted process to provide your data to state actors, but analysing that data is going to be far easier since it will come in a standard format.

If your goal is to make your data difficult to seize, a better option is probably to self-host on either a cheap VPS or a corporate-grade cloud service. That keeps the data out of reach of a warrant on your home, and keeps it unreadable after they've actually jumped through the hoops to seize it from your provider.