Fortunately some of us work for airlines, where chief pilots take the downsides of SETO seriously, and steer cleer of it for those reasons.
What also needs to be taken into account is average taxi length - it's rare to taxi out for more than 15 minutes where I fly, making any potential gains quite miniscule, compared to all the risks. Now, if you fly in USA with the 3 hour conga lines instead of A-CDM... then it makes much more sense.
And that is why at the company I work for, the decision to conduct or not conduct SETO is left to the pilots in the moment. If a CP looks at their operation and identifies that, due to average taxi time, there is more risk than reward, then that CP should not implement the procedure. However, a CP working at an airline that does operate to airports with average taxi times that exceed 25 to 30 minutes with aircraft sitting in a line may come to a different decision. I've spent the better part of 20 years working for airlines where SETO was a well-established practice - turboprops to jets. At every company there were robust rules of when and when not to conduct SETO. Every year the ops office would examine the occurrence record for the fleet, and in some cases SETO was identified as a large enough contributing factor over the year to warrant the publication of additional rules. For example, when a new runway was added at my base airport, it became obvious to everyone at every airline that utilizes the airport that there was a hot spot at the intersection of four taxiways as the rate of taxiway incursions skyrocketed. A part of that was the poor design and signage of the intersection, but another part was that is where many pilots reported they were either just starting or just finishing an engine start. By this point they had been taxiing for about 10 minutes with another 5 minutes to go, so not unreasonable for using SETO. My airline started by publishing a guideline that if conducting SETO, the engine had to be fully started and checklist complete by that intersection or had to be started after passing through that intersection. That seems to have done the job as the rate of taxiway incursions at that airport has dropped back to what is considered the background rate.