Question to local readers: Is Kazakhstan also blocking VPNs and SSH?
I never had any problems with SSH and I operate my own OpenVPN on VPS using standard port and I never had any problems with it as well.
ZaTelecom Telegram channel (https://t.me/zatelecom) claims that that not all ISPs have rolled out the MITM attack. For now, a good solution would be to switch to a different ISP (it's not like in the US, each home has access to 2-5 different ISPs).
Also, users ask everyone to use a VPN. So, I think that they have access to VPNs.