Prior to e-Visa when the visas were obtained in person at the various consulates/embassies some places would issue only certain number.
eg No more that 2 from that particular consulate.
Apart from that, entry to Thailand via air always has the risk of refusal if pp shows basically continuous stay in Thailand.
People can be refused entry with a tourist visa.
Unmarried (to Thai) and under 50yr old now have visa options such as DTV.
Why keep starting threads that you are aware of the answer/options.