Matt Parker brings good hustle and hassle but his execution is below average, and as you point out, costly.
The introduction of the Stand Rule should have put a line through recruiting him in last year's mid season draft, as this rule was designed to open the game up / dilute (Richmond's) pressure tactics, and in doing so increased the premium on kicking efficiency.
That Richmond went ahead and recruited him anyway suggests that at that point not only were they still in denial about the impact of the Stand Rule, but that they still thought they were in the 2021 premiership race.
If we are to be a serious contender this year, we need blokes that don't stargaze with ball in hand, can pick the right option, and don't turn it over.