Fair point, people, when thinking of security, tend to only focus on possibility of someone hacking their keys over the internet, but that's only one of many vulnerabilities. Losing keys stored in a physical location also needs to be considered (be it theft, fire/water damage or simply forgetting when you put them) - and the more physical location there are - the greater the risk.
But perhaps OP meant to split the phrase and keep it separately in an electronic version, i.e. as an encrypted file saved on 2 separate email accounts etc.
Split the seed phrase and save it on 2 email accounts or is it safer to save it on 2 or 3 online storage services? I've heard of this method but I never believed in hosting on online platforms, even though it sounds like a pretty good way. But the inconvenience here is that you also need to remember 2 or more email passwords, and preserving 2 email passwords is like storing seed Phrases in 2 places.
To be fair, every method has its pros and cons, which may be safe for you but not necessarily safe for others. So let's keep it in the way that we feel is safest.