Why training readiness is not tellng truth?

How long do you own the watch, does it really "know" you and your limits?

Few months. I mewn it maybe shows coreectly because at level 1 i am sleeping whike walking. But it does not mewn that i can not force myself mentalny and physically. 

It's just a rough estimation. I will often get 1 e.g. after a hard weekend. This means on monday i *could* still do a hard workout, but it will be very hard and there is an increased risk of missing session targets (e.g. pace/power).

But i agree the algorithm has room for. improvement.

Training readiness does not factor in how far you could (mentally) push yourself. It estimates how well your body could perform a training and benefit from it. You can always ignore training readiness, but that may not lead to optimal results.