It's his land and he should be able to log it. One good thing you mention is that they are just cutting pines, so hopefully there will be good recovery.
It's too bad when loggers are greedy. But there are great opportunities and logging can be beneficial if done right. It is not uncommon around here for a logger to buy some land, log it, and sell the land for more than what he paid. But many of them leave the land it good shape.
A good friend of mine and his son did that this year. They bought a 1/4 up by Barriere for $70,000. It was originally homesteaded in 1914 and partially logged 40 years ago. They will likely get $150,000(estimate by a forester) for their share of the logging, and will still have the land. And they will leave the young trees, so it is not ruined. The 1/4 is in two 80 acre parcels so they can get separate titles right away. The access road is rough but passable and there is one dwelling on the one other surveyed 1/4 further in. It's a great long-term investment for the son and nice retirement boost for the Dad (who is 72).
This same person was looking at another 1/4 with mobile home closer to here. Asking was $525k and the forester(who is a friend and was thinking of partnering) estimated a minimum of $540k for their share of the logged timber. That would be a great asset for some young person who wanted to responsibly log it over many years.
I wish I lived in this area(moved here 11 years ago) and had friends like this who could teach me these things when I was younger. It can't think of a nicer way to make a living.
A friend up our road and her sister have two 1/4's and a 1,000 acre woodlot(government land). My friend just retired this week but will support herself with good logging practices on that land. The government land is logged under very strict rules so it is sustainable and environmentally responsible. They pay royalties for the timber, must build proper roads and drainage, and log in patterns to avoid erosion, and replant to strict standards. Inspectors make sure it is done right. They did a bit of logging(looks like 30 to 40 acres) last year and spent $30k just in replanting.
One of the conditions to keep a woodlot is to log a certain amount as specified by the government(and its foresters) over specified periods of time.
I hope the logger does not mess up your neighbouring land. One good thing for you might be that you could buy it for a good price afterward as a long term investment.