Yes, the transmission shift pressure can be adjusted as well as a programmer can change the shift characteristics. All of those changes are withing the limits of the transmissions design parameters. When you add something like Trick Shift, you are forcing a sledge hammer solution on your transmission.
Remember that any snake oil product you pour into your transmission or engine is not a repair. It only masks the symptoms of a mechanical problem and that masking of symptoms is only temporary. These additives cannot fix the real problem and they will always come back to bite you very suddenly when you least expect it.
If your transmission or engine needs rebuilding, using these snake oil cures only buys you a little time and the problem will reappear and often with catastrophic failures. a $5 or $10 bottle of snake oil cannot fix a slipping transmission, leaking seals, or worn clutches and bands, it can only diminish the symptoms for a short period of time. Out of sight, out of mind
...Rich