I felt the same as you, but then all the issues started and it was like an avalanche of crap.
The cameras I think are the most reliable of all their hardware. I occasionally have weird issues where cameras lose network connection for no reason, but not enough where I’ve stopped using them.
The individual sensors for HMS work fine for me, but it’s the garbage sense hub where it all falls apart. Constantly and randomly loses connection, rending all the connected sensors useless. I lost all confidence that I could be away from my home for more than a day or two and know if there was something wrong.
Hopefully yours continues to work well, but unfortunately I feel there’s major issues with the Sense Hub and I just couldn’t sit around and wait for them to fix it (or create a new one and charge me more money to buy yet another piece of hardware).