I remember my first quilt teacher saying to the class "As long as you can sew a straight line you can make a quilt". Most LQS are dealers for one or several brands so of course they want to sell you something. What she had no right to do was to try and belittle you or your machine. Think of all the members here who love their FW and other older machines. As EasyPeezy say, there is so much information out there. You don't need to deal with rude people. You can also get lots of help here, as well as lots of encouragement. Keep going and don't let people like this ill mannered woman discourage you.
Happy Quilting