Obama didn't "consolidate power", he issued fewer EO than Bush (276 vs. 291). Trump has issued 142 just within these 100 days.
Even in qualitative terms, the "consolidation" was incorrect. Congress abdicated its responsibilities, and the Federal agencies picked up the slack. They're not controlled _centrally_, it's not like Obama was ordering agencies to write particular rules.
We now see what the central consolidated control actually looks like.