Brother Ghulam e Mustafa: These (and others) were brother Wadood's words - in what he thought was "praise" of Keralite Muslims (which I made bold and italics) - whereas they contained offensive words.
So my comments to him were actually in support of Keralite Muslims, NOT against them.
Now coming to the particular phrase that you chose to pick (while leaving out other openly offensive ones); brother Wadood should not have written
"excellent relations with ...." for that is against the teachings of the Holy Qur'an (see reference Surah Mujadelah given below) and that of our Master the Holy Prophet (Allah's blessings and peace be upon him). I know very well that Keralites are mild mannered, peace loving and live in harmony with others. So brother Wadood should have written something like "
The Keralite Muslims live in peace and harmony even with christian and hindu countrymen." It is easy to spot the difference.
لَّا تَجِدُ قَوْمًا يُؤْمِنُونَ بِاللَّهِ وَالْيَوْمِ الْآخِرِ يُوَادُّونَ مَنْ حَادَّ اللَّهَ وَرَسُولَهُ وَلَوْ كَانُوا آبَاءَهُمْ أَوْ أَبْنَاءَهُمْ أَوْ إِخْوَانَهُمْ أَوْ عَشِيرَتَهُمْ ۚ أُولَٰئِكَ كَتَبَ فِي قُلُوبِهِمُ الْإِيمَانَ وَأَيَّدَهُم بِرُوحٍ مِّنْهُ ۖ وَيُدْخِلُهُمْ جَنَّاتٍ تَجْرِي مِن تَحْتِهَا الْأَنْهَارُ خَالِدِينَ فِيهَا ۚ رَضِيَ اللَّهُ عَنْهُمْ وَرَضُوا عَنْهُ ۚ أُولَٰئِكَ حِزْبُ اللَّهِ ۚ أَلَا إِنَّ حِزْبَ اللَّهِ هُمُ الْمُفْلِحُونَ
You will not find the people who believe in Allah and the Last Day, befriending those who oppose Allah and His Noble Messenger, even if they are their fathers or their sons or their brothers or their tribesmen; it is these upon whose hearts Allah has ingrained faith, and has aided them with a Spirit from Himself; and He will admit them into Gardens beneath which rivers flow, abiding in them forever; Allah is pleased with them, and they are pleased with Him; this is Allah’s group; pay heed! Indeed it is Allah’s group who are the successful.
(Surah Mujadelah - 58:22)