Does using Dynamic Search Ads (DSA) help reduce costs in Google Ads PPC campaigns?

I’ve heard that Dynamic Search Ads (DSA) can lower costs by targeting more relevant search queries. Has anyone seen success with DSAs, and how do you use them effectively?

Be careful, it's not always true. Depends on the niche.

DSA can help, but it doesn’t automatically lower costs. I use it more for finding new queries + filling gaps.

Keep it tight: target specific URL groups, add strong negatives, start with low bids/budget, and check search terms often. If a query converts, move it into a normal search campaign with its own ads/keywords.

Where did you see that, OP?