Yes, it's temporary, but the 1990 act explicitly established dual-intent, which clearly made the visa eligible for adjustment of status under INA 245. Nobody is really debating that fact, but the announcement memo is also not clear about what they're going to try to do in terms of actual administrative process.

Part of the noise around this topic is that the administration just announced something vague with no detailed guidance, which leaves the door open for bad-faith interpretations by everyone.