Not sure what you're seeing, but Fitz has not been drafting RD much at all.
Since Fitz took over, here's his first three rounds:
2020: Holtz, Mercer, Mukh (LD), Daws
2021: L. Hughes (LD), Stillman, Salminen (C)
2022: Nemec (RD), Casey (RD)
2023: Hameenaho
2024: Silayev (LD), Yegorov, Pikkarainen, Traff
That's 7 forwards, 5 defense (3L, 2R), and 2 goalies.
I think what's happening is that:
1) Mercer is the only forward who has worked out so far, with bad misses on Holtz and Stillman.
2) Fitz wasn't able to trade Holtz or Stillman before their value dropped
3) Fitz acquired two RD this off-season, so now we're potentially 5 deep in NHL talent (though, with no RD prospects in Canadian Juniors, NCAA, or Europe)
Real issue to me is that Fitz hasn't had much of a plan for centers. Example, we came into the year without a 4C. Fitz was fine handing that to Lazar - even though Lazar has really been a RW/C combo at best. 3C is similar. Haula is a LW/C combo who has predominantly played C in NJ. Despite this, Fitz has signed zero centers, traded for zero centers, and drafted only one center in the first three rounds.