I believe that they are now leaving slightly longer stumps at times as in time a lot of nutrients held within go back into the soil which helps the restock.
Yes the trend was edging toward ripping them out and chipping them but we decided that would destroy whatever little soil there was so did not bother
We did ours between 4 and 7 years ago and we have some trees now over 20 ft - I have been creating rides with a machine so thick is the regen