people that makes use of these developers option in devices are mostly fraud stars that does illegal shits online and tries to abscond being tracked by the government. If you are doing legit works on the internet, then i see no need for the developer's option.
Even with activating developer mode, the user is still vulnerable to tracking as long he/she is connected to a particular internet network provider, or a deep search location application. Developer mode is for developers, more than 95% of people don't use the function.
For advanced investors with technical knowledge use hardware wallet, anyone you feel compatible using, for investors with average knowledge about wallet security can use open source wallets issuing a good setup, keep the wallet offline and keep the phrases intact, somewhere out of reach and not prone to natural disasters.