I haven't actually used bpftrace myself, only BCC. I can totally imagine it being more janky than DTrace, BCC is pretty janky even if I also think it's cool. In my eBPF tracing framework I had to add special handling counters to alert you if it ever lost any events, plausible bpftrace didn't do that.
I think if you're working mostly with tracing/sampling specific applications you'll be more of a BCC person, while if you're hired to diagnose problems in a wide variety of applications then you might learn to like bpftrace more.
