I get it, it’s hard to be a very small developer of commercial Mac OS Software. But these security features are just that - features. They’re specifically what I pay for when I choose Apple devices over the competition.
So sure, it’s sucks to pay Apple tax. But it sucks even more to pay ransom ware tax.
But if you’re a Mac user who has never seen this before, the odds that you make it through to the end are near zero. Most users would be scared away, rightfully so. Apple is specifically, deliberately warning you about malware and exposing yourself, so who in their right mind would ignore the warning, if they didn’t already know that it was “safe” to ignore?