Root Trimming Can you Do It?

[Cattleya17]

Hello all how are you!!!! i have always stuggled with this decision!!!! i was always taught that a happy orchids comes from happy roots so why should you trim them? this has gotten me into trouble!

I have limited growing space and the smaller the plant the better so i have quite a few Phalaenopsis that are small but, this one that needs to be re-potted was grown in a tall pot (the place i purchased it from grew it that way). The plant is small but the roots system is no joke!!! so there are alot of roots too many to fit into the new pots i have. can i cut these down to a more appropriate size and length? i really don't wanna set it into a big pot but if i have to i will i guess. Will trimming the roots hurt the plant in the long run or is this acceptable orchid culture? BTW: It is currently in new growth roots and leaves

Help, Sam!!!