There are many alternative options to store those phrases online, without anyone even noticing it.
You just need to camouflage it a bit with clever techniques that will conceal it's real purpose. (Using templates and splitting it into many pieces that only you will be able to decipher)
Some people stay in areas where natural disasters are more prevalent, so you cannot store this in one geographical location.
Undoubtedly, there are huge advantages of storing seed phrase on the Internet. Starting from protection against the destruction of seedphrases from local offline disasters (natural and man-made disasters) to increased mobility, which will allow to gain access (for example, restore access to the contents of your wallet) from anywhere in the world.
One problem is the way to implement the plan. Disguise must be at a very good level and not arouse any suspicion, because no matter what online storage service you use, there are always risks of unauthorized access by unauthorized persons (both inside the service system and from outside).
If one person can cleverly encrypt his data, there will always be another who can decrypt it. Therefore, it is most important that seed phrase doesn't arouse any suspicion or interest on the part of others. That is, file should not stand out at all from the rest of your data. And also, I think that dividing it into several parts and distributing it over several points would also be nice. If someone gets access to your phrase, then half or a third will be useless to them.
Seed splitting is not that smart, though. There are multiple threads about it on here; especially with Taproot, multisig is the way to go.
Do you allow the use of Ledger HW as one of the elements of a multisig, despite their shaky reputation (this topic is about ledger after all)? For example, HW #1 - Trezor, HW #2 - Trezor, and HW #3 - Ledger. Other similar variations, where HW #? can be any other manufacturer.