How do I deal with a manager that has poor modeling habits and tries to "teach" you them?

This post is going to come off a bit pretentious and arrogant probably, but whatever. I'm currently a senior analyst at a F100 tech company. It's a bit of a hybrid FP&A role and where I also support the sales team responding to customer RFP's, modeling out the P&L 3-5 years to make sure the deal makes sense.

I have a new manager, he's been here about 6-7 months and he's constantly trying to "teach" me new ways of creating my models. The problem is, his models are a mess. There's constantly links to 3+ other files, formatting and hard coding all over the place, never a drivers tab so it's easy to miss updating assumptions or where they even are, and the list goes on.

I was fortunate enough to do two internships where I worked with ex BB IB analysts and associates. Everything I know now I learned and grew on from them so I'd like to think I have a good understanding of best practices and general modeling capabilities, I've never received any negative feedback on modeling before this manager.

I'm about to go sit in a two hour meeting that he set up for "modeling tricks" with two other analysts and I know it's going to be a waste of my time. I obviously can't come out and say I don't want to incorporate your janky ass tips into my models, but ignoring his tips, biting my tongue and smiling is starting to drive me nuts. What do I do here?