Aliexpress sellers should pay you for this, their videos of pulling out nails that are only inserted 1cm into the wood are hilarious, you show the real value of it, pulling nails out of the big blocks, thanks a lot. Does it still work after one year ?
I use the Airlocker AP700 that shoots the nails out, most of the time it shoots it completely out, for the time it doesn't, the tool in the video would finish the job. Only useful if it's repetitive work, or in my case, allows me to work without straining my only hand.
Please show a little more respect for your tools don't throw them around as their were a piece of junk. If you had read the manual before, you should have noticed that you have to use some oil in the air intake or better an oiler.