By "pinged" you mean using the D-scanner to do a basic "honk" and a quick look at the frequency scale of the FSS?
Yes... when I enter a system, I do the honk, take a look at the waveform, and either shrug and move on, or notice things of interest - in which case I'll pretty much always 'discover' the whole system - icy bodies and all. It's important to not just scan ELW's, water worlds etc because they're not landable, and thus won't have things to look at on the surface - and that's one of my personal objectives - to find something new on the surface.
While 'discovering', I get a pretty good idea of the layout of the system - so while zooming, you see the orbits and locations of planets relative to whatever they're orbiting - sometimes you get some awesome shots - like a waterworld with rings, and a white star in close proximity, giving it a pretty eerie glow. These type of things I just have to go get a selfie and probe for it's secrets...
Obviously terraformables, ELW's, Water, Ammonia and the metal content worlds I will visit and probe - I DO want to make Elite & some cash while I'm out here too after all.
Time taken to scan a system largely depends on the number of bodies. But it has never felt like a chore - sometimes a little disappointing when a promising looking system turns out to be pretty dull - but that's exploration - but never have I thought 'ugh... not again...'. - and I've scanned easily hundreds of systems since leaving Andel a good while ago.
I never did any of this while the ADS was available, because it would have been dull, I'd never be able to search effectively for alien life, and while I absolutely applaud Canonn for their tireless work in locating the alien sites - that was all done though dumb luck, increasing slightly when it was realised that systems with Ammonia worlds were more likely to find stuff.
I myself have spent countless hours cruising over a planet surface, finding absolutely nothing, yet have someone else find something - on the same planet - just hours after I stop... This is not fun, this is not how I envisioned exploration and discovery in this game.
The FSS gives the ability to say 'ooh, there might be something of interest here, let's go look closer'. Doesn't mean I 'll find anything, might just be more braintrees... but you would never FIND this stuff without these tools. And that is the primary reason the FSS is a great addition.
The ADS simply does not offer people like myself any reason to want to go and explore - because with a single button press, it displays everything you need to know, and even if you visited every planet and 'scanned' it, you'd STILL have no idea what - if anything - was down there. And while some might think that's 'fun', it would appear most of those playing would rather be using their time to use TOOLS to discover things, rather than blind luck.
I've spent more time in Elite over the last month, than I have in the last year. And if there are even a few hundred like me, who have come back and thought.. wow, exploration actually has a point - then Frontier have succeeded in what they set out to do - and proved conclusively that the ADS is no longer required nor needed.