Why is there no frequency compensation required in TI's TL494 example buck regulator design?
Having just read about the TL494 in the last 30 minutes or so, I have to conclude that it certainly \$\color{red}{\text{DOES}}\$ need frequency compensation and that back in the day when it came out, people must have realized that and naturally &quot;slugged&quot; the output from pin 3 with a capacitor to either ground or back to pin 2.
It's a poor data sheet and only mentions the word &quot;compensation&quot; three times in two paragraphs (12.1.3 and 12.1.4) but, it cannot work without compensation for the reasons you eloquently stated in your question.
SLVA001 only mentions the &quot;compensation&quot; word once in an unconnected way. If i were you I'd be so appalled at the lack of information that I wouldn't use it. However, along the route to answering the question I came across the AZ7500B and it looks to be identical. They also don't mention much about compensation but they do provide a diagram with a compensation capacitor across pins 2 and 3: -

The above 100 nF capacitor and 1 MΩ feedback resistor have a 3 dB point of 1.6 Hz i.e. it is \$\color{red}{\text{VERY}}\$ slugged in its frequency response and will almost certainly be stable with a vast array of different inductors and output capacitors.