The announcement means that they're closing Crucial - just like it says in the title and the first paragraph. The rest of that press release is outlining the mechanics of how that works + some fluff. Micron is going to continue producing the exact same memory chips in the exact same fabs. They're just not soldering it to a board, slapping the Crucial logo on it, and selling it directly to consumers. There's nothing stopping downstream vendors from buying Micron chips, soldering them to a board, and selling them to consumers as Micron was doing previously.

There's nothing in that press release that implies that the memory was somehow different (or "consumer-grade"). The _only_ thing they're saying is that they're ending their B2C business and focusing on B2B.