the tax on rent is not a new tax but I don't know someone that pay that because they benefit from the fact that immigration office don't share data with tax office. Maybe the same will be for the new taxes but the problem can arrive by data shared from the banks
if you don t pay the tax on pension in your country and send it to thailand some money you have to pay tax in thailand but is cheaper then other countries, I paid also before the new law to avoid any problem with country of origin of pension
in the picture there is only the reentry permit, no problem to come back. Only 1 page and 1900 baht lost for not using it but nothing bad for start other visa