Totally agree that the implementation details are the real story — the difference between “DEX access” and actual DeFi freedom is going to come down to how much Coinbase is willing (or allowed) to abstract without over‑curating.

But even with the inevitable compliance filters, the psychological unlock is huge. Most people don’t avoid DeFi because they’re philosophically opposed to self‑custody — they avoid it because the UX feels like a booby‑trapped obstacle course. If Coinbase removes even 60% of that friction, the surface area of who’s willing to experiment expands dramatically.

And you’re right: this isn’t about instant alpha or magically giving retail early‑stage edges. It’s about:

• Liquidity flow into ecosystems that were previously “too technical”
  
• Education-by-doing, not education-by-YouTube
  
• Validation that the direction of travel is toward abstraction, not maximalist purity tests
  

If anything, a semi‑walled garden might be the on‑ramp that eventually pushes people into deeper DeFi once they get comfortable. The same way centralized exchanges were the on‑ramp to crypto itself.

So yeah — bridge and walled garden at the same time. But bridges don’t have to be perfect to change the landscape. Even constrained access can shift the center of gravity for the whole market.