Why is BF3 used instead of Bronsted Lowry acids in thioacetal formation?

BF3 has a higher boiling point than Bronsted Lowry acids.

BF3 is less reactive than Bronsted Lowry acids.

BF3 is a Lewis acid that can accept electron pairs, unlike Bronsted Lowry acids which donate protons.

BF3 is cheaper and more readily available than Bronsted Lowry acids.