Well. If you constantly have triplets in 2/4 or 4/4 sure, you will get the illusion of compound meter but it still isn't so...
I didn't want to get into this very much because just the basic arithmetic behind meter can be confusing but what defines a meter is not only its content but how its content is organized.
There is a hierarchy involved in meter, strong and weak beats. If you divide each of your beats in triplets in a simple meter, you still don't get a true compound meter. Just like when you use 6/8, you will not get a waltz because 6/8 has only two beats per measure and a waltz has 3.
Sure, people can use the subdivisions and pretend that it gives three beats but it doesn't because the next 1, which is on the 4th eight note is a weak beat in 6/8. So, it's not a waltz

In 6/8 you don't get the lift on the 23 56 eight notes like you do get on beats 2 and 3 of a waltz.
A waltz requires not only 3 beats per measure but It requires a heavy downbeat to start the measure and two, light "lifted" beats creating the feeling of suspension. In 6/8 that feeling is completely missed.
There are tons of other 3/4 meters that aren't Waltz either. Minuet, Mazurka, Spanish bolero, even some Jazz and Rock pieces can be in 3/4 but they aren't waltzes because they do not follow the OOM-Pa-Pa hierarchical organisation of meter.
So here, to answer the OP, the reason why people who are accustomed to hear waltzes don't hear them in many rhythm dances is simple, they are not waltzes
Whether or not one can organize any measure into creating the illusion that it contains 3 beats is another concept altogether... Sure... add triplets to you 4/4 but it's still not a waltz

. It will work with the number of beats required perhaps... if it's at the right tempo, but it just cannot give the feeling of the waltz. And that's why people are confused or complain. Or simply upset like I am
I guess this is the main problem is that some dancers, ballroom or ice dancers do not understand that music is not just about the number of beats but more importantly how the beats are interacting together in creating the energy specific of each type of dance.
Here is an example. This is a piece in 3/4. Not a waltz. It's a sarabande with the emphasis put on the second beat. So imagine, when people try to make waltzes out of 4/4 divided into triplets or 6/8. Trained musicians can tell right away they are not waltzes. Untrained musicians who actually have listened to many waltzes are simply confused. Skaters and dancers can use music however they want to put their patterns of turns and steps on the ice, it still won't be a waltz if it ain't one rhythmically.