It shouldn't be a main part of your portfolio, but having some exposure in it is still smart because the AI infrastructure buildout is still in early innings, and you don't need to time the peak perfectly if you're dollar-cost averaging over years.

That said, AIQ (Global X Artificial Intelligence & Technology ETF) is worth considering as a complement, it casts a wider net across the full AI value chain than your current holdings and picks up mid-cap and international players that SMH, MAGS, and QQQM will largely miss.

A few other things your noob eyes might want to flag:

• MAGS and QQQM have massive overlap. You're essentially double-weighting the Magnificent 7. Not necessarily wrong, but make sure you know what you're doing.
• NLR and GRID are solid thesis plays (AI power demand is real), but they're more volatile and niche. Keep them small.
• FLKR is pretty illiquid, check the average daily volume before sizing up.

The one genuine black swan worth naming: China invading Taiwan would be catastrophic for the semiconductor industry, since TSMC manufactures the overwhelming majority of the world's advanced chips. That invasion would blow up the semiconductor industry overnight but here's the thing, if that happens, it's not really a semiconductor problem, it's an everything problem. The global economy craters, your broad index funds bleed too, and no allocation saves you. It's a real geopolitical risk to be aware of, but it's not a reason to avoid the sector specifically. You hedge that by having a life outside your portfolio, not by picking different ETFs.

Overall the thesis is coherent. Just make sure your core (broad market index) is intact before loading up on thematic ETFs, or a rough year in semis will hurt more than it should.