You don't need to interpret there; it's one of the few things Musk has been relatively consistent and forthright in admitting to. EV technology alone is not a very wide competitive moat, it was clear that other OEMs would be able to catch up to it. The mechanical and electrical engineering required is not a big challenge for the supply chain and a lot of the components were already available off-the-shelf.
I believe he has said something similar to "without Autopilot Tesla is worthless" or some sort of dramatic statement like this - it's supposed to be their competitive moat going forward, so there's a lot, no pun intended, riding on it and making the market believe it's going well.
This is doubly true because Tesla is arguably not doing great at scaling out the stuff that makes the other OEMs be able to participate in the overall industry business model. Tesla has made very impressive strides in bootstrapping and building out a volume production network etc., but what other OEMs do in having stable and predictable schedules and refresh cycles for a number of underlying platforms and car lines is still a very different ball game. Just look at how long in the tooth the S/X and even the 3 are getting without a full makeover or how long the Cybertruck is taking. Also a full refresh cycle of the factory network when you switch from one carline gen to another etc. is a milestone Tesla still has to manage.