Because there is nothing really to adress about this. Just do stuff how you can - it doesnt really matter.
I believe there was like oldschool story, maybe by Dave Tate who said that in some old old days they would only have sunday free, because of family and work, and they would do all the training in 1 long ass sunday. Not ideal but still doable.
Lilliebridges also train squats and deads once every 14 days. And they have heavy bench and rep-bench day once every 14 days. Their program was 2 day split, and if it was 3-4 days then it was only the assistance exercises done on the next day.
I am doing 4 day 531 original in 8-9 day cycle. I like doing EOD as i want to get my HIT cardio and stretching in on seperate days and if i do strenght training 2 days in a row i will have an excuse that i need a rest day now, and will end up not doing my cardio. And sometimes i just take a day off if i wanna. So its 8-9 days, or sometimes 10, because i dont deload, i just take extra rest days here and there through out the cycle.
The idea of leaders and anchors is that you have the volume part which is basically like TRAINING and GROWING part, and then the intensity part, that is somewhat of a testing also.
For example, my leaders and anchors dont differ much - its just that on leaders i AMRAP my last set, but if i decide to have an anchor, i cap the top set rep at 1-3 reps, and just add Jokers for singles. Depending on how well i do, i might skip an assistance exercise, especially on 95% week, as i would do a joker of 100% and a 105% which would be somewhat of a testing my strenght. But thats it.
Anyways, i think that the leader is when you grow and train. The anchor is more of adapting that new strenght to more intensity.
The more leaders, the more potential to a good anchor.
If doing 4 day split for 2 days i think maybe you dont even need an anchor as such.
btw - why dont u like the 2 day option, doing OHP/DL and BP/SQ ? You could do one training once every 4-5 days, for example.
Also, keep in mind that squats and deads are what take the most out of your recovery. Capping top sets and reducing volume on those might change the whole training plan for you.
I also overtrain super easy, and i always mumble to myself what Wendler said on his last podcast with Bell - “its better to undertrain a bit than to overtrain a bit” and i just quit, especially lower body days, if i feel im getting too fatigued.