Things are made worse by google groups as those using it see that the text they are replying to is below where the cursor starts. They see this and immediately start writing which is exactly how MS Outlook (and MS derivative of) does it without the quotefix patch that forces MS Outlook to do things properly by putting the cursor after the replied to text.
For us old time stalwarts of Usenet there is nothing worse than top posting. Nowadays, those using google groups to post to Usenet suffer the same fate as those top posters.
Google does not care one bit about such things. Many, including myself, have complained time and time again about how they are doing it but thus far we have all been ignored and it is not google themselves who suffer is it those using their services. Many thousands of long time Usenet users, like myself, simply block (commonly known as plonking) ALL google groups using post irregardless of what that post is about and irregarless of who posted it. Of course, there are some using google groups who post properly but because of the blanket googlegroups plonk many are doing those who try to do things correctly are caught in the dragnet.
Those using MS Outlook, and derivatives of it, and not using the quotefix patch mentioned above are also automatically put in the SHUT YA FACE bin.
Myself and many other long time Usenet using people use proper news readers that do things correctly and have thousands of options to cover every possible need when using Usenet so setting up blanket plonk rules is simple. Remember this, in abstract terms if you top post you score 9999 on the scale (0 - 10000). If you are using google groups you score 9999. If you use google groups and top post you score the full 10000. Both those scores of 9999 and 10000 mean PLONK. I and many others will never see what you post to Usenet.
Now you are aware consider what you are doing and correct your actions. Who knows, if you do that you may just find your way out of many peoples bozo bins. Maybe. Then again, maybe it is too late and no matter whether you correct your actions or not you will forever remain in that bozo bin.
For many of us Usenet died a long time ago when MS operating systems (OS) became the dominant desktop OS and those using it started their top posting habits. We still use it but the shine has rubbed of it. Now google with their google groups have infiltrated Usenet and brought along with it more top posing fools this made Usenet a dull place to visit. The blame lays firmly with possibly the two biggest companies on this earth.