Biophysical Processor. product resolution

I’m processing LAI and fAPAR from L2A using the biophysical processor.
Whats the suitable resoluton for this process? Most examples i see resample to 20 meters. Also in the description it says:

One strong assumption embedded in anysingle pixel retrieval algorithmas this one, is that the pixel targeted belongs to a landscape patch presenting enough homogeneity (at the pixel scale) preventing unexpected loss or gain of radiation fluxes. Therefore, it can be applied for larger resolution than 20m.

Does this mean it is not adivsable to process 10m LAI with the biophysical processor?