This might be a disagreement about whether or not it’s appropriate to use “infinity” as a number (i.e. a value). Mathematically, if a function approaches infinity as the input approaches infinity, I think typically you’re supposed say the limit is “undefined”, as opposed to saying the limit is “infinity”. So whether this is (a) underselling it or (b) just writing accurately depends on the audience.
This might be a disagreement about whether or not it’s appropriate to use “infinity” as a number (i.e. a value). Mathematically, if a function approaches infinity as the input approaches infinity, I think typically you’re supposed say the limit is “undefined”, as opposed to saying the limit is “infinity”. So whether this is (a) underselling it or (b) just writing accurately depends on the audience.