No it isn't, and it hasn't been for the last few decades. My godly grandparents were Methodists of the old type who still believed the bible is the inerrant, infallible, Word of God. If they were alive I know they would not still be in a UMC church. My deceased dad was raised in a bible believing Methodist church, but quite a few years ago he left his UMC church and joined a Baptist church when he couldn't take any more of the leftist, pacifist, globalist, one-world junk his denomination was preaching and teaching.
That isn't to say there are no true believers left in UMC churches. It's surprising that there are still many true born again, bible believing Christians who are members and pastors in UMC churches, but I personally know some who are still hanging in there. I just don't know why.
For several years about a decade ago, I prayed that God would lead me out of the UMC, to ANYWHERE else with sound biblical theology. God must have a sense of humor, because I ended up as the President of the United Methodist Women's group (one of only a few positions in which the person must be a member of the church).
To make a long story short, I remain a United Methodist because I KNOW that is where the Lord wants me. It is hard at times, but there are many of us who stay because we believe the Lord wants us here. If/when He directs me elsewhere, I will go. Until then, I am doing what I can from within.