Private drug labs hurt RP by making people sit inside but with the several nerfs to them there's been a major decrease in RP for everyone related to labs such as LEO's being able to take them down or FD getting calls to handle drug labs when something goes wrong.
While the changes have made people more outside to engage in RP I don't think leaving them in the dirt is the best option, I still think the idea of selling drugs, gathering components, and gathering the equipment itself creates a lot of RP that has gone missing. A possible solution could be to turn the private tables into more of a passive income source where you still have to gather chemicals, plants, etc but cook a batch of drugs over the duration of 4 hours instead of making them one by one. This would make tables useful again and create RP opportunities for people to buy equipment, chemicals, and plants which creates opportunities for LEO to intercept while encouraging people to do other things than sit & wait at the tables.