While that is true, it would be much easier to get DoT deployed at scale. During DNS Flag Day of 2019 [1] a significant number of recursive DNS servers around

While that is true, it would be much easier to get DoT deployed at scale. During DNS Flag Day of 2019 [1] a significant number of recursive DNS servers around the world started properly supporting EDNS0 and several other modern features of DNS. In most cases, it was just application version updates or configuration changes. Most of the popular and widely deployed recursive DNS servers already support DoT, which means that a similar effort could be made to enable DoT. AFAIK none or few of the popular recursive DNS servers support DoH today natively. It would be significantly easier to get DoT enabled en-mass. People are much more open to making a configuration change if that is the least path of resistance. [1] - https://dnsflagday.net/2019/ https://dnsflagday.net/2019/