I can't say whether the SEC chairman overstepped his authority or not, but I know that when the time is right, the SEC will accept the decisions that the SEC has postponed. I think it's better for Bitcoin that they don't make these decisions now. I think it would be more effective to accept applications when the halving happens or shortly before it happens.
The "right time" will be when crypto is regulated "down to the bone". Once the SEC feels confident crypto won't take over the USD, it will approve the spot Bitcoin ETF without remorse. That's the way it works. We can't expect the US government to quickly open the doors for crypto/Blockchain innovation when it goes against what was established in the first place. If they can't control crypto, they will make people's lives harder by tightening regulations.
Market prices will surely "pump", but the industry will be as centralized as ever. Hopefully, the core Bitcoin blockchain will remain impervious from centralization attempts by the government. As long as decentralization wins, nothing else matters. Just my opinion