At the least it is being very conservative that places a RC at risk of discipline, versus being liberal, in a church of factions in which conservatives have essentially become like evangelicals in one aspect, that of determining the validity of teaching based upon their own judgment of what ancient church teaching says (rather than how modernists interpret it).
The difference being that RCs look to historical RC teaching as their standard, while we are to look to the only wholly inspired-of-God and substantive record of what the New Testament church believed. Which is Scripture, especially Acts thru Revelation (revealing how the NT church understood the OT and gospels), in which distinctive Catholic teachings are not manifest.
I’m going to wait just a wee bit longer before I get out my package of Wound Salt.