Granted that there is a hard core bunch of taxi drivers who ply the tourist areas and take advantage of passengers any time they can and there is always hope that some of them will be weeded out in crackdowns like this..
At the same time, In my more than 20 years in Thailand, most of it in Bangkok using taxis daily, the number of issues I've had with dishonest drivers has been minimal. Easily 90% of my taxi interactions have been straightforward, on the meter, no arguments. Most of the drivers are just guys trying to make a living doing a miserable job. Obviously, I've learned a few tricks that avoid problems. I always try to flag moving taxis, rarely those sitting parked in front of entertainment or shopping areas. When I am in such an area, I try to walk a block or two away where I'm more likely to find a driver just passing by. I NEVER ask "How much?" to a destination. I just open the rear door, say my destination and if the driver tries to quote a flat rate, close the door and flag the next taxi.