HaKatan: You’re way off base. The so-called “Chasidic havara” is not an exclusively Chasidic havara (i.e. Oberlanders [who are not Chasidic] share that same havara) and the so-called Chasidic havara long predates the Baal Shem Tov (who probably never spoke with the Chasidic havara.)
And the Oberland/Chasidic havara shares the choylam (as opposed to cholem) pronunciation with many of the Ashkenazic Litvaks.