I am calling preflop knowing that we are most likely going to go multiway with a hand that plays great multiway. TPSK is not a strong hand multiway. When we call preflop there are many hands we can continue with even against UTG overbet shove. Any trips, 2pair, or pair+ (front door) draw, or combo draw like
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for example. I missed that we also had BTN behind, making this an even easier fold. IMO fold > shove >>> call on the flop.
If UTG bet size was more reasonable (1/3 to 1/2 pot for example) we can call and evaluate. UTG gives us an easy choice (and overplays his hand IMO) with a shove on the flop. UTG is likely to extract more value over the long run with a reasonable size bet/shove line, I think.
We have ~52 blinds and it's perfectly fine to call a normal open size preflop (2x to 4x probably) with a speculative hand and go ahead and fold the flop when UTG shoves 2.5x pot.
All that said, I also don't mind a fold preflop given our perception of UTGs range and our relative early position. I just think a call is slightly better. It's pretty close in my opinion.