I thought it opened the opposite way. I would feel better about what you described.
I tend to use two cheap plastic trays (dish tubs or kitty litter trays) when I do oil changes. While one is catching the oil from the valve, the other one is under my filter. I tend to change the filter while it's draining on all my vehicles.
To be honest 7% oil retained in the pan does bother me, because I have to be the most disgusting oil is sitting on the bottom of the pan.
I made homemade ramps out of old "2 x 8" boards that I had sitting around. I cut three boards of different lengths, angled one end of each length, nailed them together, and added a 4" x 4" block on the end of the top board (to prevent driving past the end). I just drive up those when I do oil changes now. I think the angle helps more oil drain out of the Fumoto valve, too. I level the car when I am done, & I top off the new oil to the top dipstick mark.
I didn't explore a lot of options when I bought the Fumoto valve for my Mirage, but there are several options out there -
https://rxmechanic.com/best-oil-drain-valve/