This tax is too high and limits the use of crypto for ordinary people. This exchange is simply needed so that people do not start using crypto on a massive scale. The government thinks this could stop progress.
If we are talking of a fix percentage of tax, it's not high only for ordinary people, but also to people who are transacting huge amount of BTC,
Example is the above percentage mentioned by one poster, the percent is 12%, so that depends on the amount you'll transact from bitcoin to fiat.
$1,000 x 12% is $120
$100 x 12% is $12
you see the difference?