Usually never. I will list a few systems that are there in my home:
1. My personal laptop: I did an Windows 10 erase and install when I purchased it to get rid of the junk, and split the hard drive for a dual boot. I also installed Fedora initially, but a month later shifted to Debian 11, and have not touched that since. It has been 6 months.
2. My wife's laptop: It is very old - maybe 10 years. It used to run Windows till 2017. Then it fell into disuse due to a hard drive failure. I revived it with an SSD around the time Linux Mint 20 released, installed it, and it has never been erased since.
3. My father's and father-in-law's computers: These aren't in my home, but I manage them. They are also a few years old. They run Debian. Started with 9 I think. I updated them to 10 and then to 11. They work flawlessly too.
4. Phones: I erased my phone (Oneplus 6) only once after Oneplus stopped updates to install LineageOS. Others haven't been erased since they've been bought. All are over 3.5 years old.
I don't have an iphone, but I saw a similar issue with Signal.
My wife and I use Signal to message each other and we have Signal as sms handler on our android phones. For some reason, she had to use a dumb phone with no Signal app for a couple of weeks. After a few days, she was suspicious that she is not getting some sms'es. I wanted to test if this was true, but I couldn't. Any message I sent to her number through Signal would be sent as a Signal message which wouldn't be delivered and I couldn't figure out how to send as sms. I had to change my sms app to another app, and then send using that app. Now, the new sms app couldn't read all older sms because Signal removes all sms from android sms database into Signal. So, now I use separate apps for Signal and sms.
This is anecdotal. I've been able to successfully install boot and install EndeavourOS with Ventoy. I've not done anything special - just install Ventoy "sh ./Ventoy2disk.sh -i /dev/sdb", copied the iso over and booted.
1. My personal laptop: I did an Windows 10 erase and install when I purchased it to get rid of the junk, and split the hard drive for a dual boot. I also installed Fedora initially, but a month later shifted to Debian 11, and have not touched that since. It has been 6 months.
2. My wife's laptop: It is very old - maybe 10 years. It used to run Windows till 2017. Then it fell into disuse due to a hard drive failure. I revived it with an SSD around the time Linux Mint 20 released, installed it, and it has never been erased since.
3. My father's and father-in-law's computers: These aren't in my home, but I manage them. They are also a few years old. They run Debian. Started with 9 I think. I updated them to 10 and then to 11. They work flawlessly too.
4. Phones: I erased my phone (Oneplus 6) only once after Oneplus stopped updates to install LineageOS. Others haven't been erased since they've been bought. All are over 3.5 years old.