You can be, but that would be called ‘idealism’ and no one outside of western liberal spheres will take you seriously.

“Orthodox Marxists” can hardly be said to exist, because the classical formulation of Marxism has long been empirically refuted, hence the need for new schools. Even Luxembourgists are more respectable than “Orthodox Marxists”.

Your position is idealist and neither rational nor good faith - don’t expect others to meet you with merits your position lacks.