I don't think so.
Anderson has struggled offensively this year. But he's usually able to get you 20+ goals. He had 21 last year. The year before he had 19 in 69 (23 goal pace). And his first year with Montreal, he had 17 in 52 (27 goal pace).
His effort level was there at the start of the year despite not able to convert his golden chances. Then it disappeared for a bit. But lately, he's picked it up again. So the hope is that this year is an outlier and that next year, he will go back to producing like he usually does. Or at the very least, the pace he usually does.
And if Montreal can continue to shore up their Top-6 and have Anderson on the 3rd line and occasionally be put on the Top-6, then I think he'll be more effective. In fact, he's been more effective on a third line with Evans and Gallagher than he has been on the top line with Nick and Cole.