I don't think he should be. I think the Browns did pretty well and I think they are set up to get a pretty good player tonight (Will Hernandez, Connor Williams, Josh Jackson, Harold Landry, Guice, etc.). Maybe Mayfield is a bit of a moneyball pick, but that is a good thing. He was really top rated with regards to a lot of stats and situational stats.
As far as being scared that the Giants got Barkley, I don't think we should be. Yes, Barkley is a great talent, but you simply don't take RBs that high in the draft because of cap implications. The Giants had the #2 and have an aging QB. Them not taking a QB, or trading down, is a huge win for the Eagles. Odds are they will be bad without a future franchise QB on the team and will need to be bad in order to get a better shot at drafting that franchise QB. Having a rookie who is already one of the top paid RBs in the league is not good when you could get a franchise QB on a cap-friendly deal for 5 years. If the Giants traded up in front of the Eagles to take Lamar Jackson, then we would have had a reason to be scared.