(2/4) LAGs capping flop with weak hands

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I have been noticing a pattern in some of my laggy opponents. They will cap the flop at draw heavy or paired boards with crap. They seem to do this a lot into a preflop aggressor. Is this standard?

For example

Villian raises UTG+1 and I three bet with AcJs from the CO.

Flop is Js 6s 2s

Villian bets, I raise, Villian 3-bets?! I cap Villian calls?!

Turn Ah check, bet call

River 4c check bet call

(Villian had Ad4s)
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Another example

I raise UTG+1 w/ 77, Villian in SB calls

Flop Jc Jd 6d Villian checks, I bet, Villian 3-bets, I cap

Villian has AQ

Are these villian plays standard?