Ouigo have been a moderate success, but have made life much worse for other rail users, since they don't do through ticketing, often don't run into central terminuses, and mostly seem to run instead of a normal train, so reducing options for normal teavellers. Ultimately this kind of thing may end up driving a different market segment back into the air
Lumo are already effortlessly better than Ouigo, because they are managing to run and fill trains without apparently disrupting the existing LNER service at all, and while participating in industry through-ticketing and compensation arrangements.
It's a shame when members are accusing people who happen to completely disagree with them of hysteria. We're having interesting discussions, often with not much evidence or agreement on what counts as a good outcome, and we are coming to very different conclusions about how the railway and the wider world should be. Hopefully in doing that we learn a bit more about what makes each other tick, and become more empathetic as a result.