Maybe....I am convinced that those who disagree with the monetary tithe should probably be more active in correcting what they/we see as an error.
Theoretically, any Biblical truth is worth contending for. I suppose it is difficult to really see what the harm is in simply letting those we disagree with continue teaching it inasmuch as we wouldn't likely disagree that believers should give generously, willingly, sacrificially and probably regularly et. al. One problem I see is that many who actively teach against tithing have a chip on their shoulder and they tend to (unfairly IMO) ascribe wicked motives to the bulk of people who teach it. For instance:
Should the Church Teach Tithing? Taboo Answer
This fellow makes a sound Biblical case against the monetary N.T. tithe, but, he's AT WAR! about it in a way which is not helpful IMO. He seems to suggest that those pastors who teach it are simply dishonest or at best, profoundly ignorant and probably not capable of exegeting their way out of a paper bag His info is good, but he sets an unhelpful tone.
It's hard to really get "up in arms" about the tithe doctrine...but those who bother to argue against it are.... well, "up in arms" about it, and it's not always helpful!