How much of the tax evasion would disappear if we could pay taxes on crypto in crypto? The fact that the regulators scare banks away from allowing transfers to/

How much of the tax evasion would disappear if we could pay taxes on crypto in crypto? The fact that the regulators scare banks away from allowing transfers to/from crypto exchanges whilst the IRS and HMRC demand taxes to be paid in USD or GBP makes the space prone to non-compliance and stifles innovation. So, either support legitimate crypto businesses and exchanges or let me pay tax on my meme coin gains in meme coin.