Goodness, poor you for having a difficult time feeding your baby. Lactose intolerance can be very disheartening so fair enough to have a rant.
Breastfeeding is best for most babies but not all, as in your case. I think there should be much better bf / infant feeding support for all new mothers. All midwives, HVs and other medical staff who deal with expecting mothers and young babies should be trained in all the ins and outs of BF/infant feeding. This way mothers can be supported if they wish to bf and problems, such as toungue tie, lactose intolerance, reflux etc. can be identified early and mum and baby supported as needed.
Of course the way bf has been promoted in the UK has been, at times, patronising and ignorant. Just to shout 'breast is best' from the rooftops is hardly conducive and many women have struggled to establish bf due to a range of issues.
But, op, bare in mind that there is strong evidence that bf is extremely beneficial for mother and child (in most cases) and that we live in a society where big food industries have promoted artificial food to all families with heavy marketing and many other unethical ways of pushing the use of formula for decades. In this context it is necessary that bf is promoted however there should be adequate support for families, not just prescriptive slogans.
It's great that your doctor has found out why your baby was having difficulties and that a safe and suitable food option is available to you. This would not be the case for many other babies. For example babies have increased mortality due to being formula fed, especially but not exclusively in developing countries, where clean water is not guaranteed, not everyone is able to prepare formula safely du to lack of hygienic equipment, illiteracy, lack of access to medicines, in case baby does get ill etc.. Formula is expensive and unnecessary if bf is possible. The WHO have a evidence based policy on bf.
By all means, have a little rant but be aware that you are judging from a very personal and emotive situation and bf is important for most babies.