Yes. Since 1986 the ADA has Certified PCA Root Canal Sealer for use as a 'sealing and filling material with or without solid core filling materials'.
But, does that make other sealers bad.
No. But only one other sealer has the certificate of approval of the ADA and that one is Ketac, which is not nearly syringeable and is VERY hard after setting and sets very quickly.
One unique thing about PCA is that the particle size is small enough to go through the bore of a 30 gauge needle (0.006" inside diameter).
Other cements clog up any needle smaller than about 25 gauge.