Dude, no one is going to do that. 99% of users are going to re-use Bitcoin addresses and not practice good privacy habits. Privacy on Bitcoin is like trying to convince everyone a screwdriver is also great at hammering nails. Any sane person will just use the right tool for the job. You can still use Bitcoin to save if you want.
The last part is a flaw of Bitcoins' not Monero. Don't go in and out of Bitcoin. Spend Monero directly - problem solved.