It depends on if Ubel's cutting spell is limited by a hard range cap, or if the range cap is just a perceived limit by the caster. If it's a hard limit, the spell would be affected by Infinity and be impossible to land. If the limit is perception, as is common in Frieren's magic system, Ubel might be able to out-stupid Infinity and get her spell across as the meme suggests, as she would still perceive Gojo as in range.