Not sure if you actually meant logarithmic or exponential. An exponential tax rate would mean that the more you own the next unit of value would be a lot more in tax, while a logarithmic tax rate would mean that the more you own the next unit of value would be a lot less in tax. See x² versus log₂(x) (or any logarithm base, really). The exponential (x²) would start slow and then increase fast, and the logarithmic one would start increasing fast and then go into increasing slowly.

https://www.desmos.com/calculator/7l1turktmc

That’s absolutely a ridiculous stance. Yes, you can personally go through everything, but there’s also searching around to find out what other people say about it, actually look through the issues people have raised. Some of it applies to proprietary software as well, find out what other people say about the software. You don’t need to do everything yourself, but you do have to take responsibility for trying to make sure it will work as you hope it will.

It’s basically the “code” (markup, really) for showing the word “password” on a web page.