A dismissal of a civil action without prejudice for failure to state a claim, is it or is it not a strike under 28 U.S.C. 1915(g)?

Courts have held that, unless otherwise specified, a dismissal for failure to state a claim under Rule 12(b)(6) is presumed to be both a judgment on the merits and to be rendered with prejudice, is this true or false?

"A district court's dismissal under Rule 12(b)(6) is, of course, with prejudice unless it specifically orders dismissal without prejudice, is this true or false?" [I]n the absence of a clear statement to the contrary, a dismissal pursuant to Fed. R. Civ. P. 12(b)(6) is presumed to be with prejudice."

The Fourth Circuit Court decided a dismissal without prejudice for failure to state a claim did not count as a strike under 28 U.S.G.S. 1915(g), but the Tenth Circuit Court decided that a dismissal without prejudice do count as a strike under the Prison Litigation Reform Act of 1995( PLRA)and/or 28 U.S.C.S. 1915(g), which court is right and, is this a legal conflict between these two courts?

Would this statement of the Tenth Circuit be legally right or wrong, A dismissal for failure to state a claim under Rule 12(b)(6) satisfy the plain text of 1915(g) and therefore will count as a strike, without making any legal interpretation of this provision, inquiry, or analysis thereof in regard to congress intent or purpose? When Congress directly incorporates language with an established legal meaning into a statute, we may infer that Congress intended the language to take on its established meaning. United States v. Langley, 62 F. 3d 602, 605 (4th Cir. 1995) ("It is firmly entrenched that Congress is presumed to enact legislation with knowledge of the law; that is with the knowledge of the interpretation that courts have given to an existing statute."); see also Miles v. Apex Marine Corp., 498 U. S. 19, 32, 111 S. Ct. 317, 112 L. Ed. 2d 275 (1990) ("We assume that Congress is aware of existing law when it passes legislation.").

Is it the Court task here to determine whether Congress intended an action or appeal "that was dismissed on the grounds that it... fails to state a claim upon which relief may be granted" to count as a strike under 28 U.S. C. 1915(g) if that dismissal was specifically designated to be "without prejudice?"

The dismissal for failure to state a claim under Federal Rule of Civil Procedure 12(b) (6) is a "judgment on the merits and, the type of prior dismissal for failure to state a claim contemplated by subsection 1915(g) is one that constituted an adjudication on the merits and prejudiced the filing of a subsequent complaint with the same allegations, is this true or false?

Is it true, a dismissal without prejudice for failure to state a claim "does not" fall within the plain and unambiguous meaning of 1915(g)'s unqualified phrase "dismissed [for] fail[ure] to state a claim"? If true, As a result, a dismissal without prejudice for failure to state a claim does not count as a strike, is this true or false?

In any Circuit Court, will

Whether a dismissal without prejudice for failure to state a claim under Rule 12(b)(6) counts as a 'strike' under 28 U.S.C. 1915(g)