naturally any of such tricky programming need to be done very carefully.

Where the use of TF2 gives very different timing dynamics.

In your setup any interrupt may kill the timely execution, using TF2 the execution may be delayed but can not be interrupted by low priority interrupts.

Both solutions have their place, I just consider your method more risky than using TF2.

Then, of course, there is the case where you do not have an interrupt free and I would use your method as a last resort.

Erik