Desktop: (Arch) about 2-3 times a month, but used to be 1-2 times a week when I wasn't working. I also usually update when Discord stops working. Sometimes asap when there's a security fix. Otherwise i update for cool new stuff or because it's been a while :P
Laptop: (Debian) 50/50 chance when Discover says there's updates available
Phone: (ios) usually when new emojis are available 💀
Yup lol. Although just now I discovered that the Arch Wiki changed a section on Discord where you can disable the update check (before, it was written on how to spoof your version which I used a couple times)
New emojis don't roll out very frequently, from what I understand there's a whole process it goes through and then it sits in a queue for like 2 years. Sometimes I use the brand new ones, other times it's other people who use them and I want to see the emojis myself. Text ones are still just as valid though o(^-^)o