@MWolf , the writer says “…and other LACs.”
The point of emphaszing that post is that OP is asking if he/she will be at a disadvantage by attending an LAC to study STEM. I think the answer, again, is no. Bear in mind, just like many universities, some LACs are better in certain disciplines than others. For example, Lafayette offers engineering. Someone interested in studying that probably wouldn’t choose Middlebury, but if that same person wants to study foreign language, Middlebury is a great choice. (Should add that even at Middlebury, students can pursue a dual degree or a 3-2.)