Did the Jesus Revolution produce lasting Christian "Fruit", or was it an emotional, fadish "flash in the pan?

According to this Wikipedia article, in 2022 Calvary Chapel Association had some 1800 churches.

The association has its origins in the founding of a Calvary Chapel Costa Mesa (California) in 1965 by pastor Chuck Smith of the International Church of the Foursquare Gospel with 25 people. In 1968 they broke away from Foursquare Church. Prior to Smith, Costa Mesa members spoke of their own vision of becoming part of a massive church movement.

In 1969 Calvary Chapel became a hub in what later became known as the Jesus movement when Smith's daughter introduced him to her boyfriend John Higgins Jr., a former hippie who had become a Christian, and who went on to head the largest Jesus freak movement in history, the Shiloh Youth Revival Centers (1968-1989). John Higgins introduced Smith to Lonnie Frisbee, the "hippie evangelist" who became a key figure in the growth of both the Jesus Movement and Calvary Chapel. Frisbee moved into Smith's home, and he would minister to other hippies and counter-culture youth on the beaches. At night he would bring home new converts, and soon Smith's house was full. Frisbee became leader in a rental home for the steadily growing crowd of Christian hippies and he named the commune "House of Miracles"; other Houses of Miracles would develop throughout California and beyond. As Calvary Chapel grew "explosively", a tent was erected during the construction of a new building.

The converts included musicians who began writing music for praise and worship. This became the genesis for Jesus music and Christian rock concerts. Maranatha! Music eventually formed to publish and promote the music. The services led by Frisbee usually resembled rock concerts more than any worship services of the time. Frisbee featured in national television-news reports and magazines with images of him baptizing hundreds at a time in the Pacific Ocean. The network of House of Miracles communes/crash pads/coffee houses began doing outreach concerts with Smith or Frisbee preaching, Frisbee calling forth the Holy Spirit and the newly forming bands playing the music. By the early 1970s Calvary Chapel was home to ten or more musical groups that were representative of the Jesus people movement.

In 1982 John Wimber, a Calvary Chapel pastor, and the Calvary Chapel leadership mutually agreed to part ways. Tension had been mounting over Wimber's emphasis on spiritual manifestations, leading Wimber to withdraw from Calvary Chapel and to affiliate with a network of churches that would become the Association of Vineyard Churches.

Churches in the Vineyard Movement are also evangelical in nature and orthodox in their basic doctrine. They hold to salvation by grace through faith and are very concerned with spreading the gospel of the kingdom. The predominant differences between the two revolve around Vineyard's emphasis upon the "sign gifts" of the Spirit and experientially centered worship. In 2022, 2400 churches were claimed to be in affiliation.

In 2012, Pastor Chuck Smith founded the Calvary Chapel Association (CCA) to unite all of the movement's churches around the world.

Today in the US (at least) Calvary Chapel preaching has a predominant spot in radio broadcasting and this preaching is consistently identified with an insistence upon the Triune nature of God, faith in Christ alone precipitating the new birth, a high view of Scripture, and the intention of preaching the whole word of God.

While there is always room for theological differences, and Chuck Smith's prediction of the 2nd coming of Christ in 1981 was certainly a tragic mistake, both the Calvary Chapel Movement and the Vineyard Movement certainly qualify as examples of the continuous bearing of the fruit of basic gospel tenets preached during the "Jesus freak" years.