Call me old-fashioned & old-school and the fact that, previously, in-person Thai visa application submission + issuance of a physical Thai Visa Sticker in the passport = processing times seem to be quicker than current Thai e-Visa processing times; but, don't think anyone waiting for a Thai Visa Sticker ever exited the country and then re-entered the country to go to a Thai Embassy/Consulate during the wait for their Thai visa sticker issuance

So, the same concept/principle should apply for Thai e-Visa issuance = just stay physically in the country until the Thai e-Visa PDF is issued, even if it is a long processing time....

Also, this whole thing about being too lazy or cheap to physically print out the Thai E-Visa PDF:

Things happen in life, even in a fully digital world and humanity should be conserving paper and not wasting paper, but relying on showing something on a smartphone where some technical glitch could possibly happen and the smartphone becomes inoperable or one accidentally drops their smartphone, anyone would be wiser and more prepared with a simple sheet of paper with their Thai E-Visa printed on it....