No, I'm not the one claiming a modern Tacoma is as big as an old F150. Why is the burden on me to prove information presented as fact with no supporting evidence?
Well, the burden of proof is on you for saying that there are small trucks on the market. But, it turns out that the complaint about the Tacoma is spot on.
The Tacoma's weight has increased from the 3155 lbs. - 3877 lbs range when it was first released [0], to now being in the 4,425 lbs. – 4,480 lbs range [1]. In comparison, the 2020 Ford F-150 weighs in the range of 4,069 lbs – 4,653 lbs [2]. For fairness, a Ford F-150 from 1995, the first year that the Tacoma came out, weighed around 4,316 lbs [3]. So, they are in fact the same weight.
Similarly, the length of the Tacoma was 30-40 inches shorter when it was released [0][1]. Now, it is within the range of a modern F-150 [2].
In conclusion, the Tacoma has increased substantially in size since its introduction (the Wikipedia page mentions it was reclassified from a compact pickup to a midsize pickup), and is now on par with a Ford F-150 (both modern and the 1995 version) in terms of weight and length.
Couple of notes. Length numbers are more like 10-15 inches different between generations if you account for trim configurations. Single cab trucks just aren’t sold anymore which is separate from this discussion. The Taco is also more narrow than an F150 which I think is relevant to this discussion.