Do you really think all altruism is effective? Caring about the immediate well-being of others is not as effective as thinking in the long term. The altruism you are describing is misguided altruism, which ultimately hurts more than it helps, while effective altruism goes beyond the surface-level help in ways that don't enable self-destructing behaviours or that don't perpetuate the problem.
No I think almost all people doing altruism at least think what they are doing is effective. I totally get that they EA people believe they have found the one true way but so does do others. Even if EA is correct it just makes talking about it confusing. Imagine if Darwin has called his theory "correct biology".