That more than qualifies as "pioneer". Just being involved in the Traditional Movement in the 1970s pretty much qualifies you. Not every pioneer builds a railroad, serves as Sheriff, or becomes world-famous -- some just build a small log cabin for their family, grow some food, raise a few chickens, and live a humble life. But they are still pioneers, settling new ground, going where no one has gone before. Risking it all, suffering great deprivations, leaving much behind.
That goes for pioneers settling the West, as well as pioneers of the Traditional movement. Being one of 5 families helping a chapel "happen" in the beginning -- that's pioneering work if ever I saw it. You don't have to donate acreage, buildings, start a Catholic book publishing business, etc. but those things certainly earn additional brownie points.
Pioneering is about growing something from NOTHING. In 1965, there was no Traditional movement anywhere. No Traditional chapels, buildings, mailing lists, companies, anything. Right when the Mass started to change, the Traditional Movement began. TAN Books was founded in 1967. The earliest Trad chapels I've heard of were started in the 1970's.