Yes, that sometimes happens. People disconnect from the server for all sorts of reasons. It can be to do with their Internet, or to do with something unrelated to the server or their wifi. There is a lot of world between our houses and the server's location and a lot of things can have issues in that space that none of us have control over. Things happen. 

It looks like these posts are coinciding with restart. Every day at midnight and midday server time, which is about 2 hours ago your time and 10 hours time, the server kicks you. It stays down for approximately 1 minute and then allows you to come back on again. It is a quick on and off again of the server to help keep things running smoothly. There is a 5 minute warning from Broadcast every time. 

You could always get ranks for yourself? Netherite rank is a great one with lots of added perks. Patreon only lasts for as long as you're paying so it may not be there forever. Spawn eggs are handy, decorative heads are fun, more set homes and shops are always useful too. Or just have them because you have them. You don't have to spend them :)